I am a bit surprised by this screenshot I have just found on the Internet:
Is it fake?
This discussion seems to imply that there is no such notification.
Would be surprising but never know what Facebook will come up with next...
I'm also a bit worried about this. I assume these notifications simply don't exist, because I can't find any proof it does.
But it's not really nice to see this when you just downloaded someone else's photo to get a bit closer look at something in the background.
If these notifications do happen, then someone is going to think I am a big creep. O man.