Hi Peter;
I use Facebook for daily promotions of our Badpuppy updates. I strictly us G rated images and also G rated text and I've not had a problem. Example as far as text goes, when I promote say a title on our BadpuppyVideo VOD site that has the word cumshot, I post that word as c*mshot and cock as c#ck and so on! We've done well with Facebook. You do have to be careful though.