Chatting with my 28 year old sister-in-law who recently joined Facebook:

Mandy: i feel like i’m too old for it, though.
Eliot: nah, my old director and boss just joined, and with their latest software rollout it’s more acceptable (i.e. useful for adults)
Mandy: the friend who got me to join is older than i am, but my 23-year-old friend from work said to me, “you’re on facebook? i didn’t think your generation really did that.”
Mandy: then i beat her with my cane.