I'm not very impressed (and neither do I feel secure on other readers' behalf) when someone signs up and immediately offers something for sale, or appears to sign up purely in order to sell something. Since the forum's purpose is not primarily as a market place, could we have an "anti-drive-by" rule, whereby it is stated in the AUP that one should have become known to members before selling, e.g., by having a minimum of 20 posts, and that 'for sale' ads not meeting this criterion will be deleted by a moderator?