Unfortunately even trustworthy traders are fairly paranoid about following people to bases or caps-in-advance trades. I don't know how people agree to that Marko. I know that kind of suggestion would make me refute an agreement.
So far, I have not had a problem with scammers personally because I review trade agreements very carefully before I enter into a contract. Sadly some of my employees are not so careful.
The reason this list is here, is so that people know what to look for, and with the exception of Res and Jacky, most scammers tend to give up after they have been ousted. It also gives people an idea what to look for to protect themselves from a scam.