If I subscribed to Facebook, I still won't get my own family motivated enough to post photos and more chatter. Same for my closest friends. They simply have preferred styles of e-communication.

I don't see it useful at this time for work-related purposes...my career has taken a different direction where still I can go to the Internet to get fuller information on latest developments. Some of the professional associations do use Facebook but not every member is subscribing. So email still guarantees widest coverage.