I've thought of setting up a system like some tech support boards have where someone who asks a question can award points to the person who answers it best, and the points could count toward something (coupons, Amazon $, or whatever) - that could be a very useful thing as it would encourage people to help answer questions. It's kind of a complicated system though, and I don't have time to figure it all out. You'd have to figure out how to limit the number of questions a person could ask so people wouldn't be giving out the points left and right - maybe people could "buy" a question with a small donation to the site of a couple dollars, and then some of the money would be redistributed to the top few answerers. I dunno. Other than that, no, rep is hard to keep fair and mostly just a pain.