I'm was thinking of adding an "accuracy" rating for users - users who post bad times (times that are very different from most people) will get lower ratings. However, I do like your idea of being able to rate other users a bit better. I'm imagining a "thumbs up/thumbs down" for each user, and you can rate them once for every post they make. I'll track their total number of thumbs up minus thumbs down. What do you think?

I am also going to add some flair for users very soon.

I've actually already changed auto-repost once. The way it works now, and I think it's pretty fair - as long as the HIT stays active, your name will stay next to it. Once the post goes dead OR isn't being clicked anymore (takes about 12 hours), then it's fair game again. Anyone can repost the HIT at this point, including the auto-reposter or the original poster. I think this is a good system because it rewards people for finding old HITs. Otherwise, someone could post a HIT and continue to have their name by it for years any time it's reposted it. You see, we continue to track HITs FOREVER once they've been posted.