First and only time you be told this:
Posting pictures that you didn't take yourself or in the case of other peoples photos, show the source and fact that you have permission to post them will mean you get flagged.

If you get flagged, you will lose all your post rewards and your account will go black and you won't earn anything.

Post original material or be flagged out of the game. Your choice. This is friendly advice. Next time it won't be so friendly :-)