I have a FB account. A lot of family members from all over the country post there and it's a great way for me to keep in touch with them. More recently the outfit that's rebuilding the 996 motor (into a 4.0 L beast!) uses FB for a lot of communications. But, since Facebook itself is nearly 20 years old, I think I still qualify for the old people thread...
...plus I know what electronic bulletin boards are, and I know what usenet is, and so on.