This one literally made my jaw drop, and I just had to share it with you all. If you are concerned about the data that is collected about you when using particular apps (and you TOTALLY should be!), take a look at this article on 9to5Mac:
As you’ll see just from the graphic, Facebook Messenger collects a TON of info about you. Granted, this is only on the iOS side of the house. The Android side could be just as bad, or better, OR WORSE.