I’m not saying, go out and hunt for Top Commenters blogs and spam them. I’m just saying that maybe you should give these specific blogs a little more time of day then the regular blog. If you have malicious intent, be sure to be genuinely interested in the blog you’re posting on.

Hope that helps.

How To Link Between Posts

The title attribute in your link tag (<a>) is a great place to throw in some keywords that can benefit your destination. When linking to different pages or categories, you should be using a great title attribute as well as great link text.

Bad Example:

check out my post on car parts by <a href=”http://www.pat-burt.com”>clicking here</a>

Good Example:

check out my <a href=”http://www.pat-burt.com” title=”car parts blog”>post about car parts</a>

The good example uses the title attribute effectively and has great link text. It is EASY to do this. It isn’t hard. When adding a link using WordPress’s WYSIWYG (What You See Is What You Get) editor, go through the trouble and fill in the Title form field.

Use Great HTML Tags

I’ve written past articles on optimizing your HTML tags for Search Engines. Rather than reiterate each article, I’ll link to each of them:

Part 1 of Optimizing Your HTML Tags for Search Engines discusses your header (<h1>) and title (<title>) tags and
Part 2 discusses paragraph (<p>) and formatting tags (<em>,<strong>)

Another Way To Avoid Duplicate Content

I discussed avoiding duplicate content by using the_excerpt() function in WordPress, but I also noticed I have duplicate content somewhere else: my Archives.

When viewing my archives, these archive subpages (this applies to both yearly and monthly archives) contain the same excerpts as my category subpages, just arranged differently. If I want to truly stay away from Google’s algorithm that penalizes duplicate content, I should choose to keep one or the other.  We can still keep both of them, but naturally, we’d only want Search Engines to index the more optimized version. In this case, it would be the category pages as these have the category names (great keywords) in the page title and header.

How To Prevent Archives From Being Indexed 

It’s rather easy. If we have a look at the archives pages, the links all look like the following: http://www.pat-burt.com/2007/(month)/. If we don’t want this folder indexed, we can stop Search Engine spiders from indexing any content in the folders that start with 2007. We can do this by specifying the following in our robots.txt file:

User-agent: *
Disallow: /2009
Disallow: /2008
Disallow: /2007
Disallow: /2006

The first line names what spiders the following rules apply to. In this case, we want this to apply to all Search Engine spiders. The other lines specify what rules to apply to which directory structure.

If you’re new to the robots.txt file, the robots.txt file simply instructs what a Search Engine spider should do when arriving at your website. By default, they spider all the content they can get to. The robots.txt file is located on the root of your server and it doesn’t need to be present.

That’s all for now, if you’re looking for more information, you can look at what other articles about WordPress tips I have.

How To Avoid Duplicate Content

By default, your Categories and Archives pages display full articles. Unfortunately, Google may think that single article pages, where you’ve meticulously crafted your <h1> and <title> tags, are duplicates of your Categories/Archives page. This is because these pages contain identical content to each other.

There is a workaround. WordPress has the built-in option to post an excerpt of your article, instead of the full article. This avoids the duplicate content problem altogether. We can overcome the problem described earlier if you make your WordPress blog display excerpts in the Categories and Archives sections.

By default, your excerpt will be the first chunk of your article. An often overlooked feature on your Write Post page is a field to enter an Optional Excerpt. Note: It’s collapsed by default, so you’ll have to hit the (+) to expand the text field. This gives you an opportunity to create unique content as an excerpt, even a very keyword rich excerpt.

How To Post Excerpts On Your Category and Archives Pages

Go to your Admin section on WordPress. Under Presentation, select Theme Editor. Select the first Archives page on the right. Scroll to about halfway and look for:

<div class=”entry”>
<?php the_content() ?>
</div>

This is pretty straightforward, this part is repeated for every article that’s part of the archive. Replace it with:

<div class=”entry”>
<?php the_excerpt() ?>
<p><a href=”<?php the_permalink() ?>” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”>View the Complete Article »</a></p>
</div>

This code repeats excerpts of the articles instead of the complete articles. This prevents some of the duplicate content that was happening with a fresh WordPress install.

When <?php the_content() ?> is replaced with <?php the_excerpt() ?>, it’s not intuitive where the user should click to view the rest of the article. The following line:

<p><a href=”<?php the_permalink() ?>” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”>View the Complete Article »</a></p>

automatically adds a link displaying “View the Complete Article »” with a link to the full article. Of course, you can change this to whatever you like, such as “Read more” or “Banana Bread”.

I hope this helps. If you’re interested, you can read Part 1 of this series where I discuss optimizing your content and directory structure for Search Engines in WordPress. For other articles on WordPress, see the WordPress category.

If you’re newer to Search Engine Optimization, I wrote my interpretation of the definition for Backlink in a previous article describing the differences between an OK Backlink and a Great Backlink. Let’s start off with some basics.

How Do I Check My Backlinks?

The resource I found easiest to use to check your Backlinks is Yahoo! Site Explorer. Once you type in your domain name into the search field, select Inlinks. To slightly filter your results, click the dropdown and select Except From This Domain. This should give you a pretty good idea what your backlinks are. Scroll through them, have a look at them, learn from them. This is a great resource and if PageRank is a major concern for you, even more so. And now for the million dollar question:

Where Did I Get My Backlinks?

I sat down and analyzed where my Backlinks were coming from:

• Forum Signatures – These aren’t the best in terms of quality, but boy do they inflate your number of Backlinks. This is my biggest source of low-value Backlinks. I was very active at some forums and when you have thousands of posts, each with a link to your website, they start to add up. Tips:
  • Dig up old forum accounts and change your signature
  • Participate in forums that deal with your website’s niche – Create a signature, and participate in the community. Remember: don’t spam, genuinely participate.
• Site-Wide Links From Friends – Better then links from Forum Signatures, links from Blogrolls or other side-wide links also inflate your Backlink number. They might not have the highest quality (as internal pages typically have lower Pagerank), they are still valuable none-the-less. Tips:
  • Build your network of friends – Even if it doesn’t net you Backlinks, you still end up with friends.
• Commenting On Other People’s Blogs – As more of an act of building a network then building Backlinks, I managed to get a lot of Backlinks from other people’s blogs through commenting. Often, when commenting, you’re asked for your name, website and email. You shouldn’t feel guilty promoting your site. Fill in the website field, often your link will be rel=”nofollow”, sometimes, it won’t. This can net you Backlinks from internal pages. Tips:
  • Genuinely participate in like-minded blogs – If you’re doing it for backlinks, bloggers will see transparency, and who knows what will happen after that.

So if you’re desperate for Backlinks, have a look at my sources and maybe that’ll give you some ideas. That’s all. Hope that helps.

The main reason anyone should ever optimize their HTML tags, which I explained in Part 1, is that a Search Engine spider is not like a person. A spider does not see your website, it goes through the code. The reasoning behind employing some of these tips is that you may end up getting higher Search Engine placement in general, or for specific keywords. So at the expense of less then a half hour of work, you can get yourself a website with better odds at hitting that first place on a keyword you had in mind.

<p> Means Paragraph

To a Search Engine spider, <p> means paragraph. Paragraph means lots of text. Text means information for Search Engines. Although some of those that do research on the tags and their SEO effectiveness aren’t entirely sure today, you don’t have alot to lose by simply placing 3-4 letters around blocks of text. With the godsend known as CSS, nothing is stopping you from getting that paragraph to look just like you want it.

<em> Means Emphasis and <strong> Means Strong

To follow the model I applied to the last paragraph: <em> means emphasis. Emphasis means text that’s being emphasized. Emphasized text is a little more important then regular text to Search Engines. A similar theory applies to <strong> tags. Note: you can also use <b> tags. Like the <p> tag, Search Engines companies haven’t put out statements that say: SEO your website by using <em> and <strong> tags! But, there are some people who have noticed differences ever since they’ve started using the tags. Myself, I’m not a big <em> user, but I use <strong> whenever I can.

<h1> Through <h6> Are Available

Don’t limit yourself to only using <h1> tags, when <h2> to <h6> are available. Even if you aren’t using it as mini headers within your text. Instead of using say: <div id=”footer”>Patrick Burt’s Blog</div>, throw the whole thing into an <h6>, style it using CSS, and use it as a footer: <h6>Patrick Burt’s Blog</h6>. That way, with a little work, you can throw in some extra keywords into an otherwise unused resource.

That’s all for now, for reference, you can read: Optimizing Your HTML Tags for Search Engines – Part 1

Simply put, a backlink is a link from an external website to your website. When the Google Search Engine bot spiders a website, it factors in how many and how good links that are pointing towards your site. Google sees this as credibility and this is likely to influence your Search Engine positioning. With credibility, comes PageRank; with PageRank, comes Search Engine Placement; and with Search Engine Placement, comes page views and exposure. A higher PageRank is actually what we’re targetting here as that heavily influences a site’s Search Engine Placement on Google.

The reason I used the words “Ok Backlink” instead of say, “Bad Backlink” is because backlinks can never be detrimental to a site. They could be useless, but they can never be harmful.

Please note that Google is reluctant to release information on how their Search Engine spiders work as it will most likely be abused and used against them to skew results. Most of the following information is based off of research and tests.

What Makes a Great Backlink

PageRank/credibility of the site linking to you

This one is fairly obvious. If Google interprets your backlink source as one that is credible (high PageRank), it is likelier to believe that your website is of similar quality; thus boosting your PageRank. Keep in mind the best PageRanked site is usually the homepage and if I recall correctly, sub domains have to build PageRank independently.

Similarity in subject matter of your source

A backlink to your blog about Search Engine Optimization is seen as more valuable if it comes from a blog about a similar topic of interest, instead of say, a mortgage broker. Some say that it’s weighed even more if your backlink source is also being linked to by similar topics.

Keyword-rich backlink text

The keywords contained within the link are also likely to affect the quality of the backlink.

As an example, text similar to:
An interesting blog about getting great backlinks
would be better than
For an interesting blog about getting great backlinks, click here.

Notice how the keywords are used in the link.

As a side note, it’s not a bad idea to get into the habit of having keyword rich title tags

Difference between the backlink texts on different sites

Backlinks to your site in different wording/keyword arrangement can be interpreted as true links. If you’re getting backlinks to your site using text like Backlink Information, Getting Great Backlinks and Comparing OK Backlinks and Great Backlinks, this is better then say, getting backlinks with JUST the text: Backlink Information. Backlinks containing just certain text is usually a sign of link spamming or spam bots.

Make Your Backlink Worth Clicking

Why not try to hit two birds with one stone? If you have a great backlink that counts towards your Search Engine Placement, it would be even better if you got some visitors/subscribers out of it too.

The quality of your backlink source’s domain name suffix

Although this is a hard theory to test, some say that getting backlinks from sources with .gov and .edu extensions are weighed more then say, a .com or .net. These domains have eligibility requirements and aren’t free-for-all grabfests like .com’s and .net’s. If you can manage to snag a backlink from one these, preserve it.

Avoid link exchanges

Some research has shown that Google favors non-reciprocal links. That means, if the links are only coming in one-way, they’re seen as higher quality.

Clarification:
Claire has pointed out that reciprocal linking with like-minded and sites with similar content topics has benefited her website. This might be true.
When I spoke about link exchanges, I was referring to programs where you might end up having your site linking to and from something like a florist’s website. Avoiding reciprocal linking also avoids the entire “PageRank Leak” issue, which has yet to be proven, but better be safe then sorry.

There are people that have noted that: “This kind of link exchange used to be popular, but Google caught on, and nowadays sites that participate in this are penalized and can actually demoted. The rationale behind it is that when Google goes to your site from www.somewhere.com and suddenly Google finds itself bouncing back to www.somewhere.com from your site, Google concludes that there is an attempt at ranking manipulation and thus does not weigh your site in the search ranks. ”

Hope that helps.

Search Engine Spiders + Flash = Bad

When a Search Engine spider (a bot on the internet that searches for websites and their content) comes across your website, it seems your website similarly to if you visited your website and viewed the HTML source. If your site is composed simply of a CSS stylesheet, a title tag and a flash file, that’s not much information to give to a Search Engine. Search Engines feed off website information and if it’s not given to them, you’re the one that loses.

Sure, you can say that being found on Google (or any other Search Engine) isn’t important to you, but when someone might have seen your portfolio in an interview and forgot your website URL, they might avoid the phone call and search you up on Google. If you’re not up there at the top, simply because you didn’t feel like dedicating the time to creating alternate, spiderable content, that’s too bad. Someone else might end up getting the design contract.

Making a Flash Alternate

The last thing a spider cares about is how pretty your site looks. That should be the last thing on your mind.

Thankfully, SWFObject makes it very easy to implement alternate non-Flash content. Briefly, how SWFObject works is that if the Flash Player requirement is met, it displays the Adobe Flash file in a DIV you specified, if not, the original DIV contents is left intact. What a perfect opportunity! You can download SWFObject at deconcept and/or look at past articles.

I Can’t Fit Flash Alt Content on One Page

Of course you can’t. Look at the approach I took. My portfolio site (made in Adobe Flash) is composed of three main sections: Home, Portfolio and Contact. What I did was I started with three pages: index.html, portfolio.html and contact.html.

In each of those pages, I litterally Copied & Pasted the content from my Flash file. Now that I have the content completed, I threw in links that help link to and from each page so that Search Engine spiders can follow the links and accumulate content.

One thing to keep in mind, if for some reason someone search Patrick Burt Contact on Google and ended up at the Contact page, I inserted my portfolio site on each HTML file I created so that a stranger would never have to bear the unformatted text.

What about Search Engine Optimization?

Search Engine Optimization, is a giant topic all to itself. If you’re looking on more information on Search Engine Optimizing your Flash site’s alternate content, I’ve written a few articles about it. For some quick tips: stick your name in the TITLE tag, stick it in the H1 tag, and use it in the body copy.

Good luck.

Title attributes, when set in your “<a>” tag, is what’s revealed when a use mouses over your link. As pictured below.

It may appear excessive to code but this little attribute can be used internally within your site to throw in a few keywords into an otherwise keyword-weak webpage. For example, I have an About page, and my name is Patrick Burt, and for some reason, I want that site to excel at the keywords Patrick Burt. What I can do is throw in those keywords into the title tag:

Patrick Burt is cool, you can read about him <a href=”http://www.example.com/about.html” title=”About Patrick Burt”>on his About page</a>

9 – Configure your robots.txt

Robots.txt is a text file placed in the root of your server, example: http://www.pat-burt.com/robots.txt which can disallow spiders (Search Engines used spiders to “scan” your site) from accessing files or folders. You can use this from preventing Google or any spiders at all from accessing Search Engine irrelevant content. This can be anything from your Content Management System login and configs, to a directory full of your baby pictures. Nine pages of relevant content is better then nine pages of relevant content and nine pages of irrelevant content. You can set one up similar to having a txt document with nothing but:

User-agent: *
Disallow: /directory-i-dont-want-search-engines-to-see

Please keep in mind though, anyone can open the robots.txt file for your server and see what directories you have listed as non-spiderable. Your baby pictures may not be so safe after all.

8 – Know When To Use rel=”nofollow”

When rel=”nofollow” is used in an “<a>” tag, it means the typical Search Engine spider will not count your link as a “Backlink” to another website. This can help if you don’t want to directly promote a competitor, help link spammers or simply give away links to websites that don’t need them. Here’s an example of how to use the “rel” tag:

Learn about the <a href=”http://www.microsoft.com” rel=”nofollow”>creators of Windows</a>

7 – Fill in Your Meta Tags

Even though the Google Search Engine may not use these, there still are a number of Search Engines that can factor your Meta Tags into your Search Engine placement. All you have to lose is adding them, or including them on every page. It’s a relatively small investment with some return. Here’s an example of how to use a meta tag:

<meta name=’dc.title’ content=’Search Engine Optimization SEO Tips’ />
<meta name=’dc.creator’ content=’Patrick Burt’ />
<meta name=’dc.subject’ scheme=’gccore’ content=’Top 10 Search Engine Optimization SEO Tips’ />
<meta name=’dc.date.created’ content=’2007-5-22′ />
<meta name=’dc.language’ scheme=’ISO639-2′ content=’ENG’ />
<meta name=’Keywords’ content=’search engine optimization, seo, seo tips’ />
<meta name=’Description’ content=’Top 10 Search Engine Optimization SEO Tips’ />

6 – Put An “alt” Attribute on Your Images

Most Search Engines spiders can not “see” images. So it is only logical to add an “alt” attribute to your image to help with Search Engine Optimization. If the spider can’t see pixels, tell them what they’re supposed to look at. Not only would this help describing your content, but you can throw in a keyword or two. And it doesn’t stop there, people with screen readers would also be thankful. Here’s an example of how to use an “alt” attribute.

<img src=”images/my-dog-Freddy.jpg” alt=”Patrick’s dog Freddy” />

5 – Avoid Variable-Based Websites

If you can, stay away from having a website revolving around variables, and example would be: http://www.pat-burt.com/?pid=4. There are many reasons for this:

In the case of a directory where you have to type in data to search for it, a spider can’t do that. You may have a directory with 50,000 Kentucky Fried Chicken locations, but unless everything is laid out for a Search Engine spider to see, it won’t get indexed very well.

Folder names and file names do help when it comes to placement. Examples:

http://www.pat-burt.com/driving_a_car.html

http://www.pat-burt.com/?article=85

One clearly has an advantage over the other.

4 – Remember To Have <noscript>

Search Engine Optimization just wouldn’t be complete without <noscript> tags. A spider is not a browser. Javascript is rendered in your browser. A Search Engine spider will not see your drop down menus or your drag and drop interface, neither will the spider care. It’s also important to use the <noscript> tag especially if you’re using something similar to SWFObject which uses Javascript to integrate flash. Rule of thumb: If you use Javascript, have a <noscript> alternative.

3 – Use Text Instead of Images Wherever Possible

As much as you may like having headers typed out in elegants fonts such as Warnock Pro or Helvetica Neue, a Search Engine spider will not care. If you had the choice between using a static image for a header or text styled with CSS styled in an H2 tag, which would you pick? If you’re looking for Search Engine placement, it would definitely be the latter. You can do enough with the “letter-spacing” CSS attribute to make even Times New Roman look like a million bucks.

2 – Make Good Use of Your H1 through H6 Tags

Incredibly important tags. There is no reason these should not be used on your site. Not only can it help screen readers, but it can help spiders identify primary, secondary, tertiary, etc. content on your website, and rank you accordingly. I go in-depth in this blog post about advice concerning how to use your H1 (and title!) tags effectively.

And… drum roll for the best tip I can give on Search Engine Optimization…

1 – GREAT CONTENT

I hope some of you didn’t see this coming. Great content:

• Gets you featured on Digg, Technorati, del.icio.us which may give you that user jumpstart you were looking for.
• Search Engines absolutely hunger for it. The more, the better. The only instance where the more, the better isn’t accurate is if you’re spreading yourself too thin in terms of content, you may achieve worse results then you expected.
• Gets you return visitors and subscribers
• Definitely helps in terms of viral marketing

Write great content, get great content, have user-generated content. Great tips to get you started. Hope that helps.

Optimizing your Content for Search Engines

Content Volume. Search Engines hunger for more content. They could not give a damn about how many pictures you put of your dog or if your website looks like a spaceship. The more content, the more resources a Search Engine can gather about your website, and chances are, the more keywords you can reach.

Keyword Rich Content. Communicating with the language that Search Engine users use is definitely a plus. Your WordPress weblog title, your subtitle, your post headers and your posts themselves need to overflow with great keywords. These are your big sellers. For more information on properly optimizing your HTML tags (title tag and h1 tag), see Part 1 of Optimizing Your HTML Tags for Search Engines.

Targetted Wording. This goes with using Keyword Rich Content, but it’s slightly different. You would use the language of the average Search Engine user. To better explain this, I’ll use an example. I’m a Canadian, if you’re Canadian you’ll know that I misspelt “Optimization”, it is in fact “Optimisation”. I’m not unpatriotic, but when there are 10 times as many US residents as there are Canadian residents, you have to consider that. The same would apply to a blog about soda (or pop) or to a blog about the distances you run each day in your exercise routine.

Optimizing Your Directory Structure (Permalinks)

By default, your individual blog entries (permalinks) are stored in this fashion: http://www.pat-burt.com/?p=123. If we take a step back and look at this from a Search Engine’s point-of-view, why would we not use our URL resource to boost our ratings for keywords? We can. Thank you WordPress.

In your Admin Panel, select Options and then Permalinks. Let’s look at the options:

• http://www.pat-burt.com/?p=123
• http://www.pat-burt.com/2007/04/02/sample-post/
• http://www.pat-burt.com/archives/123/
• Custom

We already know the first one isn’t a good alternative. Let’s look at the second one. Why would a user searching for information care about what date it was posted on? You’re using a valuable resource (the URL) to display meaningless information (to your normal Google user). Next. The third option is a combination between the terrible first example and the mediocre example. Archives? 123? Not important.

Ahh, the Custom field, this is what we were looking for. If we wanted to use our URL’s to their best potential, we should fill them up with rich keywords. What better place to look then our keyword rich Entry names and Category names? Perfect.

Under Custom, specify below, I suggest that the best option is: /%category%/%postname%/. What this does is display the category followed by the post name in the URL structure. A great solution.

That’s all for now, you can find the rest of the articles on Search Engine Optimization for WordPress in the WordPress category.

Please note that whenever I mention something is good for Google, it’s all hypothetical. People on the web have a good idea about how Google’s Search Engines work, but there aren’t that many people out there that know how Google’s Search Engine works.

Your H1 Tag and Title Tag

I can say, and many people can agree, that these are the two most important tags for a Search Engine. If you’re above using H1 tags because they remind you of the early 90′s, you need to understand that how well your site hits on a Search Engine is more important then whatever pride you aren’t willing to swallow.

That being said, thought needs to be put into your H1 and Title tags. If these are the most important tags, why wouldn’t you want to put thought in them? You need to take a step back and understand what keywords and what market you want to hit. Let’s use WordPress as an example. Setting up your WordPress blog with the name being: “Webmaster’s Forum Blog” and spamming that throughout your site’s Title and H1 tags, in my opinion, isn’t a very good use of these two. Why not? What are the chances someone is looking for something as generic as your title in Google? In my opinion, it’s ultra low compared to the rich keywords you could be using. Note: Please keep in mind, less is more, having a title with quotation marks or other decoration things don’t really help much doesn’t help, and neither does having a title spam 3 screen lengths.

This is where Search Engine Optimization (SEO for short) comes into play. Here are two examples:

SEO Example 1

By default, your WordPress blog’s title contains whatever you said your “weblog” title to be when you first set up WordPress. So my main page and subpage had a title and h1 similar to “A Blog for Web People” on every page. (What happens is, by default, the big white text in the big blue box when you first create a blog is your h1 and title).

When you think about it “A Blog for Web People” appearing on every single page as my title AND using my h1 tag? That’s terrible, not only would it be terribly hard to rank for those generic keywords, but who would type those words in Google’s Search Engine? What I need to do is get that terrible use of words out of my valuable tags, and get some good keywords in there.
For the title:

• Left the front page title relatively similar to the default. Added some keywords to spice things up. I really don’t care if someone types in pat-burt or pat burt in a Search Engine anyway, that shouldn’t take up Title real estate. The title should still give a good idea where someone is though.
• Set all single WordPress blog pages’ titles to ONLY whatever the title of the blog post is. (Instead of the title being the default “A Blog for Web People > Title of Blog Here”)

For the h1:

• Set all the blog post titles as the H1 tag on the front page (titles are the biggest keyword loaded asset I have)
• Set each blog post title as the H1 tag when a blog post is being displayed individually

SEO Example 2

A blog is set up with advice on how to get a girlfriend. When the WordPress blog was created, the weblog title was set to “Getting a Girlfriend”. By default, WordPress put this across my Titles and H1 tags. This, THIS is a great example of a good way to use similar Title and H1 tags. I can see this site hitting tons of searches daily made by hormone-enraged 13 year olds typing “how do i get a girlfriend” “tips on getting a girlfriend” in Google and having that blog show up.

What you also need to keep in mind, is you want some variety. You also want to attack some keywords such as “How to Dress” to further help reach your target demographic and to help you rank higher on some other keywords.

For the title:

• Left the title “Getting a girlfriend” intact on the front page. Looks great in your bookmarks, explains the site, and uses your main pages Title tag efficiently.
• Set the title for all single WordPress blog post pages to “Getting a girlfriend – POST NAME” This keeps the title fairly short, and makes use of this tags importance.

For the h1:

• Left the h1 as “Getting a girlfriend”. Made use of h2 to tag all the WordPress blog post titles on the front page.
• Set the h1 as the Post Name onall the individual WordPres blog post pages

That’s all for Part 1, Part 2 will contain more information on content and directory structures.

For reference, here’s Part 2 of Optimizing Your HTML Tags for Search Engines.