Let people have it. Removing it would be like limiting what a person can say on the forums.
Just so long as it's not spamming the forums or messing up the layout, it doesn't bother me so much.
It honestly doesn't matter that much, lol. I guess it's part of your status, just like ranks would be, so it's shown in some other forums aside from the market, but who knows. I don't mind it, though.
None of that means much, though. You shouldn't be able to say you're trusted if you meet a certain criteria because everyone can - and has - scammed. Well, I mean someone with high ranks have scammed in the past and it's nothing new.
Customers are relatively stupid when it comes to trading - no offense meant. They just don't know how to trade safely and they go for whatever they can find and whoever has the best price. Naturally, before they do any of this, they see a bunch of thread titles. If they see one guy saying trusted/safe, they will in turn go to him because of that advertisement.
Most people don't know how to trade safely and they go to people who have trusted/safe/etc in their thread title and this just shouldn't be allowed.