Here's the basic idea of the Karma function: Whenever someone does something cool, like make you laugh or post an awesome image they made, you can add to their karma by hitting the little "+" below their name.
If they do something that you don't like, such as telling you off or being a jerk, then you can subtract from their karma by clicking the "-" button below their name.
Remember, Karma doesn't really mean anything. It's just sort of a representation of one's standing in the community. If someone looks at a stranger's karma and sees a real positive number, they'll know that the person is nice and likely friendly.
And if they see a negative number, well... You get the idea.
So if you get some bad karma, don't flip out about it, okay? It's just a number.

