Facebook has managed to screw up big time (not like it's anything new). Recently there have been reports that private messages sent between people were showing up on their timelines (originally only messages from 2007 - 2009). As it progressed the reports have gotten out of control and have been showing up everywhere. Messages from every year have been showing up on the timelines. It originally wasn't in North America, but again as things got out of hand, the reports are coming from all over. Despite all these reports, Facebook continues to deny these claims. Source (I already created a blog about this. If mods feel that is enough, they are free to close this up).