Well, I'm not saying I don't like Guido's suggestion, but it would be quite a bit of work to completely change the reputation system like that. Also, as I said before, a user's posts are what should give you your opinion of a user, because this is a forum, so it makes tons of sense to have the reputation based on posts.
I think we need a poll, and I'll post one, but first, I'd like to get a list of the advantages and disadvantages of the regular reputation system, and Guido's suggestion. I don't want to just tell everyone to read this thread, because it's huge.
/ 
