There's an automated "clone eliminator" script that runs in the background. I installed it a couple of weeks ago so just a reminder to everyone not to mess with the rep system.
Points should be awarded for useful posts and not part of an "I up you, you up me" exercise or because you happened to meet at a clubbing session or because you are being "helped" by an on line gang.
Please don't act all innocent if you get caught out. Just accept the penalty like a man and move on.