personally I dislike frames. Biggest reason is direct linking...if your site is framed, one address is all addresses, you can't go to a specific page easily. There're ways around that limitation, but it requires javascript and whatnot, which I also dislike. Tables get around that limitation.
Frames, you can scroll in separate windows. Can't do that with tables. Frames also separate the page into separate physical pages, making it alot easier to havea single menu supplied across multiple pages. PHP includes and server side includes kinda remove that advantage. I can't think of any other advantages to frames, except maybe you can do that natively in HTML, without having to use a server-side scripting lanugage.
i-frames have the advantage of being native html without the drawbacks of frames. You'd still need tables to properly utilize iframes, though. So bleh.
My take on it.
