Who's reading your private messages?

Yesterday I received an email from GotJuice.com, an ‘online reputation management consultancy’ (Jeez, now there’s a hole in the market that was ripe for plugging).  It said this:
“Facebook Users Private Messages Made Public
Facebook users report that private messages from years 2006 - 2009 are being displayed on users timelines”.

And I’m like, er…wow.  Really?  So all those bitchy comments you made off your public Timeline, on private message, could suddenly show up all over the...