Premise: 10/10

You input your interests and than it pops up webpages that you might like. It eventually becomes smarter and gives you better stumbles. You can find things you would have never even heard of this way.

How it Actually Works: 9/10

I've stumbled for about an hour straight before and you'll see great websites, funny cartoons, and I found a real conspiracy site. They had the links between Nostradamus, Aliens, and every President to hold office. As you rate sites with a like or a dislike the stumbling becomes more accurate but it'll still throw curveballs to you every now and again.

Usability: 10/10

Can you press a button? Than you can stumble.

OVERALL: 9/10

Boredom killer

B_m's profile is: http://brainlessmunkey.stumbleupon.com/public/