It’s hard not to use it.
I’ve never liked facebook, but lots of friends do, and after a lot of cajoling, I signed up. The non-privacy attitude of folks on the site scared me. They post maiden names, schools they went to, things they like, causes, etc, and they are very easy to see, especially if you have a mutual friend, and even if you don’t.
People will write they underwent surgery. They always go to certain places. Etc.
Dangerous.
God damned stupid if you ask me. I've gotten into arguments with a relative of mine that's a LEO - he loves putting pics of his wife, kids, the kids soccer games, vacation spots, etc. on FB.
Like no one with a grudge might ever seek retaliation.