Ban accounts with IPs from china, russia, venzuela, indonesia, india, etc = home of the scammers.
WE need to get rid of these broken english speaking scammers!!!!!.
The best solution is to just remove signatures completely. In most of the threads, no actual conversation even takes place. It's just people posting their few lines for their signature campaigns. Bitcointalk would be 100x better without signatures. Keep this place for real conversations, crypto lovers, and not 3rd world crypto scammers.