Hmmm... I'm sensing a bit of a theme here...
Why do you think that PETA keeps going on with this type of protest? They must feel that it is somewhat effective, or they would not go to all this trouble?
In one way, I suppose that with the internet and whatnot, a lot of people are seeing their message.. (everyone loves nudity... hooray for nudity!)..
But if you look at it another way, maybe it's not so much the spreading of the message, but more... a type of 'recruiting drive'.. I saw today's PETA picture and thought to myself "Damn... joining PETA is starting to look real good. Maybe I can give up meat after all or something..."