I've noticed that a number of photographers (and models) on G+ are starting to post/upload art nude images. It will be very interesting to see what happens in the coming weeks regarding the posting of such nude images. My understanding of the T&Cs are that it isn't permitted. However I don't recall agreeing to any T&Cs when uploading images. Also as the number of photographers and models uploading art nude images increases it won't be long before G+ comes out with a statement to ban them…. or… hopefully… gives us a tool to just mark them as "moderate" or "18+" or whatever.