1-Might as well do it yourself, save money eventually.
2-Order it, modchipcentral.com 3-5 days
3-Basically the same crap, minus the little screen...No big deal.
4-From what I've read it was SUPPOSED to be, but I don't have one so I can't be 100% sure. To be honest, I don't know many people that have it.
Like I said, I'm not too sure about the key's safety online, but logically if you're running a game not yet released, you're just asking for it (like my stupid brother)
Best thing, is just to patch your games with ABGX every time, especially if you're an online-gamer.