I am playing around with the idea of starting a specialized wiki. I think having a reputation system would greatly increase the user's motivation on such a site. The original wikipedia does indeed have a reputation system but it is not comparable to the one used on the stackexchange network.
Hence my question:
Is there an open-source reputation system for Wiki's like the one used at stackexchange?
IMHO it is very hard to calculate reputation for a real Wiki in the SO-way. If you let the users vote for articles, how you distribute this reputation amongst the editors? After the count of edits? After the amount of added bytes? Both variants could be played to gain more reputation, and that wouldn't improve the article. That's why I would be very careful about that.