PETA are a bunch of idiots and this just goes to prove that point. I'm absolutely not against treating animals better than we currently do, but the peeps from PETA have a long record of fucking up.

Is porn ok?
Most of the times it isn't, no. But since this is a much too broad subject to go into here I won't.

Is veganism a good idea?
Not for me. I like cheese and Yogurt and the occasional steak or sausage much too much. Also, I know of a boy who has been raised by vegans and who at the age of five has the mental capacity of a two year old. Could be the reason isn't veganism, but I don't believe that.
So: for adults who made an informed decision to live vegan (and got more than just a little clue about how to go about it), it's OK. For everybody else: No.

Is it ok to show shocking pictures of reality in the interest of getting attention to your cause?
Of course it is. I guess they'd still be cutting each other's throats in Bosnia if there hadn't been the pictures and the live coverage of the bombs' and snipers' victims in Sarajevo, Gorazde, Mostar etc.

Is it ok to mix porn with animal abuse in order to 1) get people attracted to the site? 2) 'lure' them into seeing the reality of animal industry by so doing?
Nope. It's dumb. It's ... well, it's PETA.