It's like asking someone if they are Christian or Muslim. What's the difference?
There is no difference. I don't think Kber81 meant anything buy it. English isn't his first language. I was just letting him know his question was rude. If you are in the middle of a discussion with someone and out of the blue you ask what their religion/race/sex/etc. is. It is viewed a rude by most people. Its the context of the question. Plus using Jew instead of Jewish exaserbates things. Its like asking someone from Japan "Are you Jap?". Its just rude. I hope I have done an adequate job of explaining things. Sorry for getting completely off topic everyone.