I recently had a photoshoot with models and I informed them that I will be posting their photos on both FB and here on Renderosity.  They had no problem witht hat.  I think as long as people are aware that you will post it on the web they will actually appreciate that. 

I have published pictures of my children here before and one thing is for sure, if there is any perverted sicko out there that think he can harm my child, he needs to know that he has to get past me first.  And any angry mother is dangerous. ;)

I will never publish pictures of someone without their consent.