My language etc is all outta whack here ... but it is 2am, so I apologise.
candybear, you are a very bright lady, but in my experience one has to be extremely careful about personal information. it's okay to normalise if you wanna challenge, it's fine to question (you're a journo, i know you know that), and it's all right to give something personal if that's what your subject asks for - carefully, of course.
i'd just be wary of bringing up something personal as a means to gather more info or challenge something. that's all i meant