The power of games is in part that they provide such clarity in defining the roles and goals, that they helped us to know what to do and how to do it, and as such, they motivate deeper forms of learning. Gamification, at its worst, rejects a theory of intrinsic motivation in favor of one based on extrinsic motivation. That is to say, it attempts to motivate “proper” or “desired” behavoirs through attaching points to otherwise mundane and uninteresting activities. For example, Foursquare represents a gamification of consumer loyalty programs.

Henry Jenkins, talk at USC, May 2011: via ACA Fan