Growth of Facebook & privacy “events”
A few years ago Facebook and Myspace were engaged in heated competition over users, and Facebook only controlled about 30% of the Market. As the Graph shows, things have changed, with Facebook in control about 84% of the market for “general” social networking today. As Facebook has grown, and as users have become more entrenched, much of the Privacy-friendly functionality used to initially attract users has disappeared. Replaced instead with many public-by-default (if not public-with-no-other choice) options.