1) Keyword tag – A keyword tag is for keywords, but not for any keywords. You cant just stuff this tag with keywords that your entire site is related to. The tags should reflect keywords only on that particular page; not the entire site and not every keyword you think your site might be searched on. Also, you should have no more then 20 words in the tag. You should not repeat any word more than 3 times. If you sell tickets, for example, don’t write: Broadway tickets, circus tickets, hockey tickets, boxing tickets and so on. Do use Broadway, circus, hockey, boxing, tickets and so on.
2) Abstract tag – It is sometimes used as a replacement for or combined with a description tag. However, more and more people are using these to stuff keywords. Search engines like Google are interested in what is on the page. More specifically, what visitors can view. In my opinion, the abstract tag has no place on a site.
3) Description Tag -The whole point behind this tag is to describe what the page is about. Keywords related to the page should be implemented as well. The limit on words should be 2025. I see many website owners stuffing this tag with keywords, or having a description that is entirely too lengthy. Stay within these guidelines and you will be fine.
4) Title tag – This, to me, is the most important tag. This is the first tag the search engine reads. It tells the search engine what the page is about. Don’t put your web address here. Do not add your company name in the beginning of this tag either. It should not exceed 60 characters.
5) Content – If you notice, I have been commenting on relevancy to the page, not your overall site. Each page has its own keywords. Tag the title tag, description and keyword tags. All of these keywords should be the same. Add them to your content as well. Now your page should be fairly well optimized.