Arcturus on 19 April 2010
@ fadetoone: My first thought would be to maintain a list of who has completed what challenge. I know, not much incentive there. If Challenges were to become popular enough, I could have a separate leaderboard for the people who complete the most challenges.
@HideoK: Have you given any more thought to your idea? Can you think of some way to entice the issuing, accepting, and completing of challenges?
