I thought it was proven that previous reports of "private messages" showing up on poeples' Timelines were false and were down to user confusion?
While that's true, the fact is that the data stays forever.
If you copy the direct CDN url of a photo on Facebook and then "delete" it, you can keep returning to that URL to see if it is still active. I've one saved from 2009 that still loads, despite having being "deleted" for almost three years now.
Facebook deletes poke data. http://techcrunch.com/2012/12/22/your-facebook-pokes-are-sto...
Re:Introducing Poke for Mobile
by creativityland on Friday December 21, 2012 @04:25PM
(#4954588)
The younger kids won't switch from snapchat to this and they seem to be the audience for this kind of feature.
Sure it disappears from the app, but the message probably stays on Facebook's servers for the rest of your life. Then someday in the future Facebook will probably change their privacy settings suddenly (on purpose or accidentally) and all your messages will appear on your timeline for everyone to see.