I don't think you have to have you real name in your profile.
I am probably not the best at being careful what I write. I once had a friend asking about someone I had posted on here because her SIL spotted me and apparently reads about me all the time
I think mostly people that would spot me on here would know me pretty well and then I don't really care if they see what I write on here. I know I have recogonised a few people on here and may have done my fair share of reading about them