We have seen it the past and I bet there are still active apps being spread among Facebook users by pretending to be spectacular videos. In all these cases, there is no immediate reason to worry as long as you know about it and trust the person, app, script, or extension that has access or authorization.
There are three main reasons that might be of some concern: How do posts end up on your timeline that you didn't post?
All in all, there might be some discrepancies between what you did and what actually shows up and that’s what this blog post is all about. The feeling of disorientation you get when you find something you are sure you didn't post will be even worse if you notice that supposed messages have been sent from your Facebook Messenger account that you know you never sent. That’s because we think we know exactly what is posted there, so why bother to look at it? After all, isn’t that supposed to be all the stuff that we posted ourselves? With your own profile, I mean the timeline that shows up when you click your own name or avatar in the Facebook menu.
It is my assumption that most Facebook users don’t look at their own profile often.
