Haven't done it since the SNES days.

of course,over here in the uk you can get some great trades at blockbusters and hmv,i'm not a millionaire

i keep some games and if i missed a game and it is brand new for £20 later,i usually keep those too

I sell my games secondhand, sometimes at gaming shops, but mostly on the internet.

I keep all games I really like, of course, but games I grow bored off have to go to make room for better games.

I used to, until I realized years ago that you get ripped off from game stores. Unless you sell them on Ebay/Craigslist it just isnt worth it IMO.

Last straw was when I tried to return an unopened copy of Fable 2 (without the receipt) that I got from a friend for Christmas. I tried to return it to Gamestop, because I got the collectors edition from my Wife for Christmas and now had 2 unopened copies.

They tried to give me the used price for an unopened copy.......unopened. I about punched the clerk in the face.

As far as I can remember, I've never traded a game in. By the time I get bored with a game, or don't play it any more, it's practically worthless. Recently, I've started lending my excess games to friends (I loaned MW to a friend when I got Resistance 2 and Killzone 2, for example) if I don't feel like playing them. Then I can have them back whenever I want them.
Plus, I hate the way places like GameStop and Game rip off people who trade in.