Search Engine Optimization - The Importance of No frames tag
Frame tags are very useful when the website is bulky. Frames tag needs only little efforts when updating the site. The only drawback of frames tag is its impact in SEO, because many search engines cannot recognize web pages that use frame. So it becomes difficult for a site to rank well.
The main factors to be considered for site optimization are its readability by human visitors and spiders. And the other factor is optimize site with its prior keyword or phrases to get the top on search engines.
For doing so no frames tag should be used, to describe your keywords. Do the search engine optimization as the set rule. Repeat keywords in title tag, both Meta keyword and Meta description tag. Maintain keyword density avoiding too much keywords and phrases.