I tend to use Facebook to keep track of people in my chosen profession ( the touring theatre world) because it's the easiest way to touch base with my friends who work on other tours. But I do keep up on this forum and the Smart car forum (I drive an '09 Cabrio when I'm at home) because the niche market community connections are important to me. For person-to-person and work-related communications, I stil rely on email, but it's not always practical - many times the internet connection in the theatre I'm working in or the hotel I'm living in is sketchy or just flat-out nonexistant.