It has been said in the past that the Internet is nothing more then a giant waste of time. No where is that more clearly illustrated then with stumbleupon.com. Yet strangely the site acts like crack and keeps you coming back for more and more and… well you get the point. Stumbleupon in many ways is very similar to this site due to it being a recommendation engine for cool sites on the Internet. I highly recommend you check them out sometime (but only when you have some free time to waste).