Kazumi Ryoudo
If you're rating all 1-2s on everything or 9-10s, that would impact how your rating is factored in.
Well, that case, we'd still have rating whores, if your "karma" goes up from giving better ratings, than we'd see nothing but 9s and 10's even on things that the rater knows doesn't deserve the score he/she gives. ( I might have read that wrong and thought it meant something else, excuse me if I did.)
Kazumi Ryoudo
Some people also assume a portion was implimented into the bank (though no real proof aside from a high percentage of users coincidentally getting random events after sending one sided trades).
Well there are two things wrong with that idea:
1. The most obvious being that, if anyone got more chances of random events, then they wouldn't be random events.
2. People could use this to there advantage still, say Gaian A has a mule account (Gaian B), Gaian A "donates" a fairly large sum to Gaian B, and with the karma system Gaian A either gets a rare event or gets much higher chances of getting a rare event, both accounts could just keep sending one sided trades and keep getting more than the passed "donation" is worth. It would be abusing the System greatly.