Because the trader system is deeply flawed? You don't see too many negative feedbacks anywhere, yet there are always dis-satisfied people on this forum whining about something or another. The policy here on CGN seems to be "don't rock the boat", and if you aren't happy go somewhere else. Kind of defeats the purpose of a feedback system, eh.
Oh, and IBTMFL!!!!
Edit: I don't have a problem with Marstar at all, I was just bringing up a point about feedback here in general. I was intending on buying a Norinco NP58 from them, but they didn't have stock at the time and ended up getting it from another site sponsor.