Oh yeah, I need to get the Steam Trade achievement also. I can do coal for coal or some other trade out of the things I have plus I have a copy of Portal.
I'm not sure if TF2 items count if done by Steam trade but I have a bunch of those as well - although I used to have quite a lot more until I traded for games and a craft number Bubble Pipe.
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Operator of the Would You Hit It Topics!