Twingly is a screensaver which lets you watch global blog activity in realtime. It looks like you’ll need a fairly decent graphics card to make it work, but nevertheless it looks like an interesting experiment if you like that sort of thing.
Twingly screensaver is visualizing the global blog activity in real time. Forget RSS readers where you see only what you’re interested in. With Twingly screensaver you get a 24/7 stream of all (viewer discretion advised) blog activity, straight to your screen.