facebook apologize to users

Facebook apologizes to users for psychological experiments
facebook has triggered a violent protest when it revealed that the social network has conducted psychological experiments for nearly 700,000 users. in response to the situation, executive director sheryl sandberg had to apologize officially to appease the public.
14 million users have publicly posted their private posts due to Facebook's error
recently, facebook has released an official announcement and apology about a bug that caused the postings of 14 million users created on facebook to be moved to the default privacy settings.