From PETA's site...
"We have found people do pay more attention to our racier actions, and we consider the public’s attention to be extremely important. Sometimes this requires tactics—like naked marches and colourful ad campaigns—that some people find outrageous or even “rude”; part of our job is to shake people up and even shock them in order to initiate discussion, debate, questioning of the status quo, and, of course, action. "

So they think people will pay more attention to animal liberation if they post a photo of a naked women on their website?!? That's disgusting. If they want to "shock" the viewers of their website why don't they list stats of how many homeless animals are euthanized in shelters each year.... SOMETHING LIKE THAT... People visiting that website are probably already animal lovers, they don't need to see sexy women to convince them to "take action"