Search Engine Ranking Factors - Even though search engines won't castigate for the use of frames, dynamic content and multimedia files, they will have difficulty indexing them.
Problems with frames. Frames are supposed to make navigation easier by keeping a part of a site constant, while opening links in another part. However, frames have become a problem for web masters and users alike.á
There are various issues to deem:
Printing a document is harderáand book marking is difficult.
Majority of search engines don't index them, some people still use browsers that don't support framesáso say "No" to frames!
Frames make your life more difficult, so why use them? If you can avoid using frames, do so. This will save you a lot of headache. You won't have to worry about search engines being unable to index your site.
If you do decide to use frames, you will need to make an extra effort to be indexed by search engines. Most search engines don't index content in frames.