Nah, it's because the way Facebook sets up it's privacy. You can't really have the user do *anything* social unless you rape their privacy. Want to allow your player to transfer his name and profile picture over to the game? You have to access his pictures and his profile information. Want to allow him to invite his friends? You have to access his friends list. And there's not really a reason to put the game on Facebook if you're not utilizing the social aspects. It'd be wonderful if there were some sort of option whereby an app could allow you to see a list of your friends, invite them, etc, without the actual app being able to see that information, but Facebook doesn't really provide that level of detail. To be fair, there's probably not a lot of demand; the crossover between people who have a huge desire to play Farmville and the people who are strongly concerned about their privacy is not likely to be large.