In Facebook retreats on privacy the WSJ reports on likely agreement the company may reach with the feds about future use of customer data. Narrowly at issue: what to do if Facebook simply changes its mind about promises it made to customers about how their personal information is used? (We would not use the word “safeguarding” since that would imply Facebook is itself not one of the buzzards intent on feasting on your data.) How do you get the genie back in the bottle? Ans: You don’t.