Do people with an extremely negative karma die and come back as frogs?
Also, how @SG, how do you make that fancy 'line' in the middle of your posts - sort of handy for jumping from talking about turning into frogs and something more serious.
Lastly, I think a Karma system is okay, provided people use it responsibly. I've generally started Rating posts (mostly in the Ideas section) 1 Star if they are just a card name, a cost, and a poorly enunciated description of how this card 'killz everithing on the screen'. And 5 stars if they've gone through the time and the effort to explain how and why their card is useful, the pro's and con's it has etc....
ps. I think Scaredgirl deserves an Award...