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This is a historic moment for social games. “FarmVille,” the hit Facebook game among all hit Facebook games, is no longer the top app on the social network. For the first time since claiming the top spot more than a year ago in August 2009, FarmVille has fallen to second place in terms of monthly active users on Facebook, according to AppData.com. Coming in at no. 1 now is the app “Phrases.”

A Facebook engineer said that some applications were passing along personal data in a violation of policy.

Before iPhones, Foursquare and Facebook, B.J. Fogg envisioned a mobile fitness device that coaches the user, tracks her location, and shows her friends also exercising at that time.

Developed and powered by Vitrue, the new page puts the App Store inside Facebook — making it easy to search for apps, share them with friends, find out which apps are hot right now and which are deemed “essential” by the iTunes editors.

Investors are pumping more and more money into web services that are heavily reliant on Facebook. So how big is the economy around the world's most popular social network?