For me, Facebook is still the only way to keep up with my closest friends and family. I live 3k+ miles away from were I grew up, and it's Facebook's asynchronous form of communication that allows me to spend minimal effort to keep abreast of what's going on there.
Another thing that Facebook offers is the ability to get to know who I'm dealing with when I friend a new colleague or someone I just started hanging out with. It's a great way to spark conversation "oh hey, I see you made cocktails last night, I love run rummers!". Or, "I see you liked Datsik, want to go to a concert with me?". That's essentially how I met my wife.
Another thing that Facebook offers is the ability to get to know who I'm dealing with when I friend a new colleague or someone I just started hanging out with. It's a great way to spark conversation "oh hey, I see you made cocktails last night, I love run rummers!". Or, "I see you liked Datsik, want to go to a concert with me?". That's essentially how I met my wife.