You might also like this article on the psychology of game badges (achievements): http://news.ycombinator.com/item?id=2328684 http://news.ycombinator.com/item?i

You might also like this article on the psychology of game badges (achievements): http://news.ycombinator.com/item?id=2328684 http://news.ycombinator.com/item?id=2328684 I'm interested in reading more about achievements and badges. They seem to be a great way to motivate users.