IMO the most obvious reason a thread like this won't really work is because, as Ryan mention, it's not very difficult for someone to change their IP or screen name and do the same, and there is already a feedback section to air out dirty laundry. If someone is not concerned enough about a transaction to search for a screen name and locate a bad feedback thread, a blacklist isn't going to help much either. Not to mention 9.9 out of 10 times once someone is "caught" as a scammer or has bad feedback left for them, they won't trade under that same name again. So it's going to be filled with a list of names of people who aren't trading under that name anymore anyways. As Aaron mentioned, the amount of scammers here is extremely low due to the nature of the forum atmosphere and general positive attitude of the user base. There are other forums where it seems there is a large percentage of transactions which have some sort of problem. However, it can happen to anyone on any forum and unfortunately there isn't a lot that can be done to stop it. There is a long list of people who have had dozens of positive transactions, only to end up leaving a bunch of people with empty wallets and no product. It happens. It sucks. There's not much, on a forum basis, that can be done to stop it. The mods aren't police. We're janitors. We don't have the capabilities or the information to stop scammers or help those who were scammed, and a "black list" isn't going to stop scammers. With all of ebay's supposed precautions, they still have scammers. The point is, in online transactions bad things are going to periodically happen. Be thankful it happens as infrequently as it does on this site. For those that have been scammed, it's unfortunate.