You can take a look at one of the possible reasons in a short piece I wrote about Facebook Paper, and especially screenshots :-) http://www.koszek.com/blog/201

You can take a look at one of the possible reasons in a short piece I wrote about Facebook Paper, and especially screenshots :-) http://www.koszek.com/blog/2015/09/08/copyright-screen-of-facebook-paper/ http://www.koszek.com/blog/2015/09/08/copyright-screen-of-fa...