I found this little game. It's called the Passive Multiplayer On-line Game.
What is it?
It's a game you play without knowing that you are playing a game. It's hard to explain, there are a couple of good guides (not on the game's own website) which do a decent job of describing how it works. The rest is up to you to figure out.
Basically, you load a Firefox add-on which tracks your Internet surfing (don't bother with this if you are freaked out by this notion) and you rack up points depending on which sites you visit.
You can follow missions which basically send you on a voyage of discovery of web sites. When you complete missions you get more points and this helps you jump up a level (if you complete enough missions).
Give it a go @ PMOG