I noticed on one thread that people were uploading photos of celebrities that must have been lifted off the web. There is even at least one video taken from YouTube.
I was just about to do that myself when I thought: how could that be allowed here? But I guess it must be allowed.
Technically, it's not:
I agree not to post any material which I do not own the copyright to, either in the story / poetry section, or any other parts of the site. This includes text as well as images. I will not use copyrighted images, without the permission of the owner.
But also,
By entering this website, I agree to release, discharge, and hold harmless the providers, owners and creators of this website from any and all liability which might arise from viewing or reading the adult content on this website, or for the content which I have uploaded. This clause includes image uploading.
So it's really on individuals. Lush doesn't have the man-power to police that really.