[Nedsel]

I assume everyone is aware that numerous sites, including Facebook, have in their user agreements that anything posted becomes "public" to the extent that the poster gives up the right to exclusivity, and that the host site assumes ownership of the images and can do whatever they want with them. I would think this infringes on anyone's ability to claim rights to the images they have posted, but it does leave a grey area as to whether users of any given site can also "borrow" the same images and photos with impunity. What do the legal minds here say about this conundrum?