Tadhg Kelly @ Gamasutra: "This article describes 8 kinds of social game operating today (mostly on Facebook) and provides many examples. We hope it does a better job of explaining what is going on in social games and why we're so very excited by social games in general.
Social games as an industry is about the conversation. We realised recently that the conversation about social games is still waiting to be had but it can't be forced. Social games are still very unfamiliar terrain to most, and so this article is all about grounding that conversation so that it can begin."