VANCOUVER—Google knows how to reach the “Facebook generation” of 18 to 32-year-olds. They have a simple “M” that is their logo for Gmail, and they put an ad on YouTube asking people to videotape themselves passing the M from the right side of the screen to the left. Then they used the responses to create an entertaining ad on YouTube. Social media maven Tod Maffin gave this example of how to enlist the Facebook generation at a recent Vancouver conference.