You're kidding, right? Your client wants to show off your photos to hundreds of potential cilents and you hit them with talk of illegal activity? Why on earth wouldn't you want your photos to be seen by as many people as possible? After a wedding I upload a selection of discretely watermarked images to my FB business page and tag the couple in, you cannot get better free advertising. Then you get people commenting and liking photos and their friends see that they've commented and it's all happy times.
OF COURSE a bride is going to call them 'her' photos, it's her day and you're the guy she paid to cover it, it would be ridiculous for her to say "Here are my photographer's photos guys!"
You can't fight Facebook, not should you want to, this is the best facilitator of word of mouth advertising that's ever existed, I just don't understand some people. Worst case scenario you lose out on a few low value sales to guests, best case scenario you book a bunch of high value weddings out of it.
ABSOLUTELY!! lOl.. what is wrong with people... hello someone else doing my marketing for me.. maybe i should take legal action against them. BAD IDEA JEANS!