Frames can kill Some of the major search engines cannot follow frame links. Make sure there is an alternative method for them to enter and index your site, either through meta tags or smart design. For more information, see the tips on using frames . Expect that some of the search engines won't be able to index them. Consider creating static pages whenever possible, perhaps using the database to update the pages, not to generate them on the fly.
Search engines tend to choke on it.
The Search Engines And Dynamic Pages article available to Search Engine Watch members provides additional information about testing for and solving dynamic delivery problems. As mentioned above, meta tags can help you overcome problems with tables, frames and other trouble areas. Meta tags will also help you control your site's description in engines that support them. You should use meta tags, but keep in mind that they are NOT a guarantee that your site will appear first. Adding some meta tag code is not a magic bullet that cures your site of dismal rankings.