When my W and I separated, I blocked her from FB. That was last May. I have not made a single attempt to even look at her FB since then. I dropped FB altogether in December when I filed. I do not miss it.
If you live in a state where affairs matter (like mine) then I am sure her L will tell her to clean up her FB and keep it sterile of anything that can be used against her. Word is that my W did the same thing after my December filing.
Me: 42 W: 32 Married 7 years together 8.5 S1: 7 S2:7 Bomb #1: 09-16-13 Recon #1: 11/13 A discovered 04-03-2014 W filed D 05-19-14 but never served me I filed D 12-02-2014 S 05-31-14 Divorced 5-19-16