StumbleUpon
Maybe I spend a little too much time wasting time with StumbleUpon.
At first I was just bored. Now I know I’m addicted to the thing. I don’t check my email, I don’t do my work, go into an irc room any more. Now I load up Firefox, and click Stumble!
It’s been at least a day since I’ve been able to stumble, and I’m starting to miss it.