Meta Tags- What Are They and Which Search Engines Use Them?

Meta Tags - What Are They
& Which Search Engines Use Them?
By: Richard Zwicky

Defining Meta Tags is much easier than explaining how they are used, and by which engines. The reason is very few engines clearly lay out what they do and do not look at, and how much emphasis they put on any one factor. So, we’ll start with the easy part

Meta Tags are lines of HTML code embedded into web pages that are used by search engines to store information about your site. These "tags" contain keywords, descriptions, copyright information, site titles and more. They are among the numerous things that the search engines look for, when trying to evaluate a web site.

Meta Tags are not "required" when you're creating web pages. Unfortunately, many web site operators who don’t use them are left wondering why the saying "If I build it they will come" didn’t apply to their site.

There’s also a few naysayers in the search engine optimization industry who claim that Meta Tags are useless. You can believe them if you like, but you would be wise not to. While not technically "required", Meta Tags are essential.

If you simply create a web site and register the URL with the search engines, their spiders will visit your site, and attempt to index it. Each search engine operates slightly differently, and each one weighs different elements of a web site according to their own proprietary algorithms. For example, Altavista places an emphasis on the description tag and Inktomi states on their web site that;

Inktomi "(...) indexes both the full text of the Web page you submit as well as the meta-tags within the site's HTML."
Other search engines like Exactseek are true meta tag search engines which clearly state their policy:

"Your site will not be added if it does not have Title and Meta Description tags."
They also use the keywords tag.

Of course, not all search engines work this way. Some place their emphasis on content. The search engines have over 100 individual factors they look at when reviewing a web site. Some of these factors deal with page structure. They check to see that all the 't's are crossed, and the 'i's dotted. They note sites that have omitted basic steps, like missing tags.

One reason so many engines de-emphasized the meta-keyword tag had to do with spam. There was a time when 'search engine promotion specialists' would cram keywords tags full of irrelevant information. The web site would be selling garbage cans, but the keywords tags were chock full of irrelevant terms like "mp3" or "Britney Spears". They figured that if enough people visited their site, some would buy.

So today, to avoid and penalize this kind of abuse, some search engines don’t specifically use the keywords tag as part of the scoring of a site, but they monitor the keywords to ensure they match the content in the site. The reasoning being that, if the tags are irrelevant, they must have an alternate purpose. Is it a spam site? When keywords tags are completely irrelevant to the content, some search engines, that don’t specifically use keywords tags, will penalize that web site.

Even for those engines that have downplayed the value of Meta Tags, there are situations where Meta Tags gain considerably in importance, e.g. sites with rich graphics, but poor textual content. Unfortunately, a picture is worth 1000 words to you and me, but zero to a search engine. If a site has poor textual content, the engines will be more dependent than ever on the Meta Tags to properly categorize it.

Even if you ensure you have completely relevant Meta Tags, some search engines will still ignore them. But better they ignore them, than they ignore your whole site because they suspect something is less than above board. Never hope that having Meta Tags will make the difference in all the search engines; nothing is a substitute for good content. But in cases where the engine depends on that content, it may be the only thing that does work for your site.

So How To Use The Meta Tags?
Meta tags should always be placed in the area of an HTML document. This starts just after the tag, and ends immediately before the tag. Here’s how the most basic set should look: