I have so many family members on there and it's fantastic. So many people had drifted and when my nan died I vowed I'd make sure people kept in touch better. Main focus were my cousins on my mum's side and I now have every single one on there, including some of their children who are old enough.
My brother and I are the youngest by quite a way so I never really got to know some of the older ones, especially as one and his family lived abroad and FB has made a massive difference to that and I've spoken with and spent so much more time with them since.
I decided I wanted to get my dad to get to know me better so I put him on. He never posts or messages or anything like that but mum (who can't even turn the computer on bless her), says he goes on it every day and comes down and gives her little updates about what I'm up to. He is so much more chatty on the phone as well, rather than just getting mum he chats more now.
When my mum came up on my last birthday she said my dad had suggested I have a winter coat for my birthday as I'd mentioned I was cold on there haha :)