I've asked about different things at different times - it really depends heavily upon the circumstances of the situation. I've asked personal questions and gotten answers before but it was in an appropriate context. Though once I asked my old T how she acquired her cat and that was a really weird random question that happened to have a personal answer. Silly. I've also asked "what makes you tick" type questions like why T chose her theoretical orientation and gotten answers - though sometimes those types of questions even result in T resisting to answer...