I already use paperbackswap and swapacd. I've managed to acquire a few trades through paperbackswap but have unloaded considerably more that way. I'll have to check out swaptree.com. ThanK you for mentioning it!
You're welcome. I've found it to be a decent resource for trades and hard covers since it's so easy to filter down to their "Comics and Graphic Novels" section and peruse what's available to me based on what I'm offering to trade. Here's the stuff I've gotten via trades on the site...
13 Essentials and Showcases
2 Vertigo Crime hard covers (Filthy Rich and The Executor)
Batman: Ego and other Tales hard cover
Demo
Hawaiian Dick
I Kill Giants
Superman: Kryptonite No More hard cover
and the aforementioned Nobody and Revolver hard covers still in shrink wrap