UPDATE on Friday, February 11, 2011: We've begun expanding the rollout of Messages to everyone on Facebook. This will happen gradually over the next few weeks. Learn more about using Messages in this tour . Originally Published on Monday, November 15, 2010: Imagine the kind of family you might see in a modern American sitcom: loving parents trying to maintain a family unit with a teenager engrossed in text messaging, a college-aged child who is always chatting online,