If anyone wants one to check that site out pm me your email and I'll send invites.
It's a Liberty Media associated website. Right now you get points for logging in and answering random question (1 question/day mostly related to media). That way you get 2+2 points. You also get 2 points for every invited person that joined.
For cheap you can contribute to some charity actions, for 100 points you can get a xbox360/ps3/wii game. For as low as about 300 you can get a cheap ipod shuffle.
The problem right now is that the stuff there gets almost instantly out of stock so when you collect enough points you have to keep on hunting for the item you want

Oh, also if you invite 20 friends you will get a z-something starter containing some gadgets and a tshirt. Also, from that moment you will get twice as much points.