Heh heh. I have a differnt way. Just like Mag points are distributed by the computer (and alexp), why not let the computer choose KARMA as it's called. Charma isn't how it's spelled. Try looking for Karma at sites like Warriors2 and Newgrounds.
Some ways to get good Karma would be getting a game that has a 5 or more on it's rating. Helping out noobs/newbs could be another way but that would have to be decided somehow, like mabey a button that others could press if they think somebody helped out one. 4 people would have to press it though and they'd have to have over 50 MAG pts. That would be one way.
Another way, and the way Newgrounds does it, is that they let the user decide and it affects a background of an image you see when you go and look at there profile.
I don't know. I'm just tossing ideas around.