I think FB can be a double edged weapon. It was mt experience the my W was using FB as tool to hurt me. I had blocked her off my newsfeed and stopped going to her page long before she blocked me off her page. I have noticed that her BF has not unfriended me which I found interesting.
I see a lot of DBers suffering painful moments from using FB and seeing what their WASs are doing and saying. I made the decision not to play that game. It just seemed so "high school" to me.
“Things turn out best for the people who make the best out of the way things turn out” ― Art Linkletter
