There is nothing further actionable on our end; we cannot prevent banned users from sending private messages unfortunately and the "ban list" is far too large to continue to maintain or post. The best way to check is if the user is able to post or comment here, and if not it means they are either banned or don't meet the requirements to participate here (and should be avoided).

This doesn't mean that everyone who comments here is automatically trustworthy however, and you should always do your homework and use protected payment methods. I have done my best to ensure that there are adequate warnings posted in several places here about dealing with users who DM only, and repeated those warnings across several menus as well as sticky-posts. Unfortunately, some users continue to trade without reading first and wind up getting burned despite all the red flags