For me face book has been a positive thing for me. On my friends list i keep it to people that know me in real life and some online people that I have known for years. Also there are allot of depression, anxiety, ptsd support groups that are great for me. I also am a pet lover so i have joined a few groups. I think it comes down to what you use face book for. For me i don't get out much other then day program and bike riding so my social life is online it has been since i was a teen ager. Also i play games on face book like sugar crush. I have been lucky no negative or bullying on face book it's been pretty safe for me so far. How ever face book isn't for every one and i respect that too