When you post on the internet, you always run that risk. The only way to avoid it is to not post at all or take care about what you post. My husband knows I post on a forum (although I don't know that he actually know what site and I'm pretty sure he doesn't have any interest in reading what I post), but yes, I suppose he could if he chose to. Not much here he doesn't already know, but it isn't something I worry about. Honestly, my therapist probably knows more about what I post here than my family members so it wouldn't particularly bother me if he read what I posted. In fact, if he actually did and put 2 and 2 together to figure out it is me, I'd be rather impressed.