The 20 Fastest Growing Facebook Apps: Mostly Social Games, As Usual

INSIDE FACEBOOK — This past week was typical, in terms of which Facebook applications we saw gain the most users. Social games of various genres continued to gain millions of users. Similar to past weeks and months, Zynga’s virtual farming game FarmVille grew by 5.11 million monthly active users to reach 46.0 million, and the company’s role-playing mobster game Mafia Wars grew by 2.05 million to reach 23.2 million. They came in at number two and number four on our top 20 list...