Wondering

So...I'm wondering (again) just how wonderful Facebook is. I love seeing old friends/family/classmates, catching up on their lives and seeing the offspring! My only problem is when I find out little details from photos that make me sad. Or when I realize that a high school friend hates my religion. Or any number of other facts that people post about themselves without thinking about just who their audience is. Hmmm. Can't decide if ignorance really is bliss.