No, definitely not. Most people don't bother trading safely, which is why they end up getting banned. You will never be banned if the gp is transferred via even stakes.
Which is how I believe I will start trading from now on. I wasn't being careful before, but now that I got a hammer I think I'll do that. I'm laying low for a bit, just until it clears up you could say.
Trading hasn't gone down, and never will. With even stakes as jake stated, there is no possibility whatsoever of getting banned.

