That brings up a pretty valid point - has anyone broken down what happens with what level of karma?
I know at 5 you can downvote comments, and at 250 you can change your bar color. Somewhere in there, you can create polls, but I don't know how that works, so I don't know what level karma is needed.
You're probably right about the 25 - I'm still pretty new and my karma is at 17, so I don't see downvoting. I hope the minimum number doesn't keep moving up on me as I approach it :)
Okay, not really. In fact, I'm not sure there are any perks beyond that, either. :)