I read Andrew's post about the disappointing SE/30
One thing we might like to consider is putting our TradeMe aliases in our signatures. I know some people do this already. There is no guarantee that everyone who uses these forums is a good ethical trader but through their postings and general VC community involvement/enthusiasm you can get an idea who might be. TradeMe items from these people can be purchased with more confidence than unknown traders.
Generally if people have a stake in a forum community like this one they will go out of their way to make sure descriptions are accurate and buyers are happy. I know for myself, I wouldn't want to compromise my standing in the community by providing misleading Trade Me sales blurbs.