This site gives you pretty broad capabilities to post and upload stuff. DON'T abuse that ability. Simply put, a fair amount of stuff you find on the Internet should not be posted here. Definitely not if you got it from a paid members area, and sometimes even if you got it free. It's fine to post images of yourself. It's fine to post images of people you know IF they're OK with you posting them. And it's sometimes OK to post commercially produced images IF they're watermarked promotional images.