Succeeded in banning and making scammers unwelcome on internet forums? Yeah that's achievable.

A long time ago before torrents were as popular as they are today and people downloaded from sites like Rapidshares and Megaupload, I remember coming across a warez forum that gave away free premium accounts to some hosting sites. No idea how they got them, but I doubt they used legal methods. Looking back at it now, they were probably obtained by phishing or maybe carding. That forum had a marketplace where you could buy all kinds of stuff. Scamming and scammers were not allowed. The point is, a forum that supports pirated software, games, and movies had no tolerance for scammers. Why would Bitcointalk have?