I think he is a tactless narcissist and won't vote for him. With that said, he is bringing a lot of issues to the forefront and forcing the other candidates to talk about them instead of tip-toeing around them.
Nah, it's all an act. It's like a middle finger to the whole "voting" institution. I believe he wants to prove something - that the more outrageous you are, the more you will be spoken about and the more people will vote for you just because. I'm actually curious to see what will happen. :)