It is hard to believe that social media is less than seven years old. Facebook now claims more than 500 million users and there are no fewer than ten other social networks that claim more than 100 million. The popularity of playing games on social media platforms is also growing at a brisk pace. FarmVille reported reaching 62 million active users in September 2010. 

People using social media and playing online games are generally not focusing on data collection and ...