Stumble Upon allows you to pick out some of your interests from a massive list, and "stumble" through the internet.
Each page is more than likely going to interest you, and often you will find a gem that you have never even heard of. You have probably heard the bad wrap for Stumble Upon, for being so addictive, but it's just so amazing! Nothing could keep me online as long is Stumbling does. There is always the curiosity.. "If I quit now I might miss a good stumble!!!
MY rating of useful-ness? 80% We all get bored once in a while, and this cures it for all of us!
