this is a really great idea for this thread
might i also add a suggestion
i've played a few games before that used trades on the forums and what they did was keep track of successful or scam trades in the thread with the players names that made the trade and report the good or bad trade to the thread moderator (in this case the OP) or anyone that wants to start a thread and be an active part of the community in keeping the thread up to date
for the most part it worked out very well, but there's always a few bad apples in the bunch and using this technique you can have a record of those out there with many successful trades aka the trustworthy people and the people that are shady and less likely to be traded with
Decent idea.
I had a successful trade with sideslip and would trade with him again.