XP has a certain video game score quality to it. It's fun, but not useful. On the other hand, reputation seems like it should be useful as a feedback mechanism. (Compare to mailing lists where a thoughtful post can just disappear into the wild without any comment. Was it good? Was it bad? Was it too long? Am I a jerk?)
I'm glad to hear other monks say good nodes sometimes have low reputations. At the same time I'm saddened, because it means we still have the mailing list problem and also have new false feedback problem.
This strikes me as similar to the "not" problem in logic programming -- false is different from missing.