If scam is the issue, why don't we restrict people to post ICO ANN here? Aren't they scamming more? Lots of new ICO is launched daily and people lose thousands of dollar.
I'm agreed with you but if you consider scam, restricting ICO ANN will be more effective.
Also, because of those ICO ANN thread, spams are increasing too.

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I think theymos is not thinking about this now at all. Otherwise, in recent updated restriction, he would definitely add this one too.