Facebook to Let Users Limit Data Revealed by Log-Ins - NYTimes.com

Perhaps partial privacy progress

"The social network also announced that it was testing a feature to allow people to use their Facebook identity to log in to other sites or apps through a button marked “Log in anonymously.” Users who choose that button would not be anonymous to Facebook, which will continue to collect the information about what apps its users are active on — data that is useful for targeting ads. But no personal information would be revealed to the outside service."

Facebook to Let Users Limit Data Revealed by Log-Ins - NYTimes.com