[slinky]

Your power goes up dependant on how many posts you have, and how much karma, and i think (not sure) how long you have been a member.
Power if I am correct, means how much karma you can give. If you have a power of 4 you can give anything up to 4 karma points, but not all the time as sometimes, it will only give the person 2 or 3, so it is the maximum points of karma you can give.
If I am correct, you can only give karma after you have posted 100 times. It's been that long sinse I had to think about it all, I have gone a little hazey. But I think i'm correct, and sure if I am not, someone will correct me.