Great thread, and Teary and others doing the "dual personality" thing - thanks for a well-needed laugh.
I think people must define apostate by degree. Are you apostate when you simply leave the religion? Possibly not. But when you put up your first Christmas tree, have you crossed the line? Not necessarily. Early JWs celebrated Christmas. How about actively debating and refuting JW propaganda? Does that make you an apostate? Depends. Degree comes into play again. Do you wear a T-shirt and disrupt a JW meeting or protest outside a KH? Or do you simply quietly advocate the "real truth" to family and friends or in written word?
I define myself as an apostate because I left the faith and have gradually formed a set of beliefs that is quite different. I don't actively try to refute JWs or prosetilize [sp?], but I would never go back. One of my daughters, on the other hand, I think may be in danger of going back even though she doesn't believe most of what JWs teach, but still feels the need to fill some spiritual void.