Personal thoughts about Facebook:
Because of Facebook I am able to maintain contact with family and friends I hadn't been in contact with for 10 years. I can see what they're up to, see my nieces and nephews on a daily basis, keep up with their lives. I loath talking on the phone, and can't hear when I do talk on it due to babies freaking out. I can do Facebook on my own time, and don't have people pissed at me for not wanting to be on the phone.
If TPTB want to know stuff about me they will know about me. Aside from living as a recluse and never using any type of electronic communication I have zero privacy anyway. If I'm out in the open with everyone on Facebook then it's much harder to implicate me in bullshit that I had nothing to do with (as has been the case with people who were private and "off the grid"). So fuck em. I'm gonna post what I want, and be transparent, and if they want to mess with me they're going to no matter what I do.