The problem with this is it conflates expertise with wanting to play little karma games. They may (sadly) be equivalent on StackOverflow, but in some fields I i

The problem with this is it conflates expertise with wanting to play little karma games. They may (sadly) be equivalent on StackOverflow, but in some fields I imagine the experts have better things to do. The wiki would start to reflect experts at the game rather than experts in the topics covered.