Value:
Detects whether or not your page is using frames.
Recommendation:
Although modern search engines are becoming more efficient at indexing web sites
that implement frames, there is still a lot of room for improvement. Therefore it
is not recommended for anyone serious about obtaining top rankings and maximizing
search engine traffic.
Tip #1
With ASP.NET’s introduction of Master Pages, frames-based websites just might be
a thing of the past.