Hey, could I get a Left 4 Dead Bundle key, not really too sure how this site works do I need to give you something as well? Thank you!
I can trade a copy of Hammerwatch.
this sight is designed to let people trade games. the most common currency is team fortress 2 crate keys (TF2K's). a TOD is a tour of duty ticket. it has less value than a key. here, he wants 5 TF2 keys (£8). if you want to trade with a user, you add them to your steam friends. there are two types of trades. gifts and codes. a gift is when a game is in there inventory and they can trade it in a normal steam trade window (less scammers), or the other way will take place in a chat where one will offer to go first and give there half of the trade, and then they must wait for the partner to respond. you determine who trades first by REP(reputation). anyone can give anyone good/bad rep in coherence to the success of previous trades. hope this helps. enjoy trading.
There's someone on the Steam trades forum looking for Portal 2, just thought I'd drop in and let you know.
http://forums.steampowered.com/forums/showthread.php?t=3278008