My t is rather open in general, though we have addressed my worries about knowing too much about her (brought up by a few experiences with other t's). She doesn't cross the line into dual relationships, but I have quite a bit of knowledge about t's personal life/ life outside the t office. I'm undecided about how much it helps. On the one hand, I like knowing t has a balance between personal and professional, and that she takes time to care for her whole self. On the other hand, I sometimes worry that I might have too much knowledge that may end up being hurtful. I've had t's tell me things they should have reserved for colleagues, and it ultimately caused me way more worry than necessary (and still occasionally impacts my life though it has been years since I left their clinics)... I dunno. Like I said, I'm undecided about the value of it, though I likely would panic about a t who was a complete blank slate (too much space for my transference and fears to run amuck).