By the way, is there some vigilante anti-scammer squads on this forum, who track down and "eliminate" scammers? Well, except moderators.
There are plenty of people that do this to varying degrees by leaving negative feedback on users they believe to be scammers or have scammed etc. It's a losing battle though and thankless task but some people persevere regardless. Anyone can do it though and the community largely polices itself so I'd urge anyone to leave positive or negative feedback if they feel it is deserved for good or bad behaviour.