Well, all of that can happen right here too, being this the best current Bitcoin forum around. Whichever crypto forum you are on, you still need to keep your wits up high. Bitcointalk has some community built-in features to try to mitigate the risks (Trust System, quick action from admins and fellow forum members when reporting phising links, etc.), but nevertheless remember: faceless is shameless …
The quality of forums partially comes from built-in features as you stated (Trust system) to fight against scammers, and clearly gives users signals that accounts with negative trust are not reliable to do trading, exchanging, or anything else.
Of course, human can make mistakes (me too), and they should have second chance to come back (theymos already raised his opinion about that).
However, negative trusted users always should be considered carefully before others really do directly things with them (trading, exchanging, and more things).
And, the forum has one of the strictest rule and punishment on plagiarism.
No excuse accepted, no chance to come back (nearly no chance) when plagiarisms detected.
Additionally, the feature to nuke bad guys is another good feature of the forum to protect users.
