How many people do you think wander into large forums with the expectation, "I need to be on my guard or else I will be scammed, because the forum allows scammers to stay here."
Maybe big red warning on every trading board post started by a newbie; something simple like-
Personally, I would rather accept the risks of a free forum than the alternative.
As it currently stands, imagine you hit the front page of Bitcointalk: there's no way for you to even know about the existence of the trust system unless you see a thread in Meta or some discussion about it. What's the likelihood of that? You accept the risks of a free forum
now, because you know the conditions. Anecdotal evidence is not always sufficient, but our sample size well exceeds 10 at this point (in relation to ONE scammer): how many scam victims were ignorant of the forum policies and expected intervention?
Suppose you are a guest and you want to investigate the currency with say, $10. Currency exchange seems good! (and any variety of potential situations as a result of easily-preventable ignorance)
Consider a scammer that exclusively uses Newbie accounts: do we flag them so that guests will see a warning? If so, then what if the Newbie is genuine? If not, then what action do we take to caution users if not a message on visit?
If we're to specifically target marketplace sections and boards where scams proliferate, a warning that uses a significant amount of screen space and cannot be easily-avoided (i.e. a banner that requires scrolling down or a landing page) can be applied to guest users.
It's not as if you can't make a
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