I thought Ancestry was working on something to keep people from lifting photos. I guess I'm mistaken.
I just found some of mine in a tree that I have no idea how anyone in it is related to my family.
I've no problem sharing my information with anyone but photos are NOT information.
Photos are what makes a tree unique to the owner of that particular tree.
I'm deleting many that I added to my tree....why bother having them there as they are on other people's trees now anyway.