milosevic - 10:47 am on Dec 22, 2010 (gmt 0)
2. Frames = bad, and it wouldn't be a candidate even if they weren't.
What I'd say though, is this a good idea? Websites turning into a screensaver isn't expected behaviour. Say someone lands on your page and gets a phone call, comes back 5 mins later, Your website as they saw it before is gone, they think the new thing is a pop-up and close it. Remember that many people browse with multiple tabs open and may open new pages in a tab in the background to look at later too.