Kind of like the FB like button, except some members don't use it just to say good/bad post. Some use it to say hello, some think that it represents the size of their dick, and others use it to leave a comment vs. just using the PM system.
In fact, we're getting very close to the anniversary of the great rep incident where we had regular members actually leave the board when they were told that we were resetting everyone's rep to 0 again. On April 1st. Mind, I set that one up very well...
Oh. And I'm sure lurkingdirk will chime in about rep at some point. Just ignore whatever he has to say about me and my thoughts on reputation. He has negative rep (his little bars below his name are red) and his bum is still a little tender from when I gave it to him.