I have no idea who some of my FB friends are. :-( They add me, and I see that we have 8 million mutual friends (usually from this site) so I add them, and then try to sleuth around and figure out who they are later.
There's also a few like that from high school. We apparently graduated in the same class from the same school and we have 82 mutual friends all in our class, and they look slightly, vaguely familiar, but the truth is, I have no idea who they are. D:
I only outright rejected one family member. She was my adopted sister. I accepted her because I knew her, then I took a look at her page and realized that we were never going to get along because she was very snotty and violent and liked to brag about beating people up on her page, so I un-accepted her. Then my grandma told me that she was living with "some
black man" and they had two kids who the rest of the family calls the "zebras" because they are half-black-half-white, har har heehee. I got off the phone with my gran and added her back. I might not like her, but holy crap, I'm not going to stand by and ignore her while the rest of the family treats her like that. I don't have to like her in order to love her.
A lot of my family I ended up adding and then un-subscribing from their updates. We disagree so strongly on so many fundamental things that I just can't get on and get my news feed spammed with it every day and keep my sanity. So, those who use their FB as a political sounding board get un-subscribed. Those who used FB to keep in touch with people, I stay subscribed to. They never have to know I unsubscribed from their updates, so it keeps the peace.