Beautiful! i will most likely buy this theme. Two things: Why twitter and google+, but not facebook share beside the question? And also, it would be cool if it had the "follow this question" feature. But that might be difficult to implement.
Also another minor thing: It doesn't seem to allow comments under the question, only under answers. I guess the only other missing feature is the ability to sort answers by date or votes. Okay, that's about it. Cons outweighed by pros!