I have a forum for people with dissociative disorders, and my T has read there (she's told me-- I don't really care) and I also have a well known blog that she has read. For me, it doesn't bother me that she has read my stuff-- but if there is something I REALLY want to keep private, I post it in a password protected forum of my website.
Oh and my T has looked at my pictures on facebook-that sort of surprised me when she told me that! She was like, "oh i've seen this picture before--its on your facebook!" But it didn't b other me, just cuz I trust her I guess. I tell her everything under the sun anyway.