Frame Haters are a vocal majority. Yahoo even has a special section for Frame Haters . Use frames sparingly. A framed page will load as slowly as a frameless page. Frames work better on Intranets rather than Internet pages because the user is typically more familiar with the content, bandwidth is higher so loading is quicker, and intranet users tend to print pages less.
Frames work best on simple sites with only one vertical or horizontal scroll.
A thin lefthand border frame works well if your site's navigation choices are very long. Sitemaps work well in frames.