Well, I went hog wild. (Wild hogs being well known for buying up lots of games, ya'know.)
Got the last Elder Scrolls DLC, Far Cry 3 + Blood Dragon, Mirror's Edge, the new Tomb Raider, and Final Fantasy 7. (And, with the money I saved, I got a new NVIDIA graphics card. That gave me a free copy of the new Tom Clancy Splinter Cell game, and since that's a pre-order I got Splinter Cell: Conviction for free, too!)
The trading cards seem pretty pointless to me. If you earn enough badges you can gain a level. If you gain a level you get… what? The ability to do a little more stuff with your profile I think. That's not worth bothering with. Maybe 10 years from now the cards will be worth something…