I have 26 games but I do often trade in games i have finished and wont play again, or games that are new that i wont play again for a while.. If i really like the game I will buy it again a few months later when its around 10-15 notes..
Below are what i have, tho I will Trade in AO2: 40th Day for Dantes Inferno finish that trade that in for Bioshock 2 etc.. If I come across a game i really like I will keep it like darksiders..
Buzz World Quiz
Rise of the argonaughts
Army of 2 - 40th da
Star Wars Force unleashed
GT5 - Prologue
Ninja Gaiden Sigma
Genji Days of the blade.
To be3 honest I would probably trade a lot of the above games in but the trade in values are so low its not worth it.
Most of my old collection I had finished or just didnt like recently got stolen, will only replace a couple such as metal gear solid 4 possibly one of my fav ps3 games. I dont really get rid of my games (well by choice anyway) like looking at my mighty stack from time to time and thinking yeaaaa thats right I do have all those games haha