We do not have a Trade/For Sale/Swap section at LQ at this time. While it's not something I'd completely rule out, it's also not something that's on our radar at this time (and if ever implemented, would probably be something we'd look to a third party for, similar to
http://jobs.linuxquestions.org/ - which would allow us to offload the fraud detection, abuse and related liabilities to someone who does that full time). Thanks for the feedback.
--jeremy