When I first visited here, I thought Sainthood was something above and beyond the normal level system. After all, only dead people become Saints. ;)
The whole XP/level system is fun, but it's only a means to an end, i.e. a device to help the community resist destruction from the hands of newbies. It works amazingly well.
OT: Has anybody tried to bring anonymous voting into the work place? I'm responsible for my division's engineering data management system. We have serious problems with quality metrics and I've been thinking of using document reputations to help filter queries.