My website is currently running with some iframes. Other than the Forum part of the website, the iframe seems to be working flawlessly. For the Forum, if I turn off the scrollbar, the page would look nice BUT after every 3rd forum posts (or if you post a very long post) the top part would get stuck. If I turn the scrollbar to on, the page would look ugly but everything would work fine. I've found something here http://forums.whirlpool.net.au/forum-replies-archive.cfm/963653.html but I have no idea what are they talking about.