I don't feel that a "FAQ" or general "Guide" would stop anyone from discussing, and adding to a conversation.
In fact, I'm sure that most victims want a more personal approach.
That's fine, as long as people don't get burned out writing up 5000 word essays explaining the situation.
Dealing with Getty is very straight-forward.
1) Don't admit anything, and don't talk to Getty or its reps on the telephone.
2) Remove the image immediately.
3) Make a reasonable offer of 50 -200 dollars.
4) If they accept it, you're done. If not, ask for proof that they own the sole copyrights to the image, and demand proof.
5) They won't send you that, so you're done. If they forward a "bulk registration", that's no good either. You're done.
6) Expect them to bug you every so often, but they can't do much if they don't own the copyrights.
Of course, it would be fleshed out a bit more than this... but you get the idea.
It really doesn't matter where the image actually came from.
It doesn't really matter if it's hotlinked, they'll bug you regardless, but still can't do anything without the copyrights.
If Getty starts to get registrations for its catalog of images, we can report on that, and adjust as required.
Again, a guide isn't intended to stop discussion, it just keeps us consistent, and saves time for other things.
We should also keep in mind that many points are of little concern unless a victim is actually heading to court... BUT...

S.G.