> Leaving a "happy birthday" used to mean you
> actually remember the date
Really? I'm sure there are plenty of people that put those things into calendars. How is the Facebook reminder+wallpost that much different than using Google Calendar + Gmail to get reminded to send a happy birthday email?
Maybe I didn't express myself correctly (My English is not that good) I meant picking up a phone and calling, establishing a connection, a bond - ie: Something not automated.