FB is already losing the youth. They’re leaving because it is no longer cool. FB is going to be around for a long while. What’s next? Where is the next wave? As a web marketer, I love that I can narrowcast with FB. If I need to promote to teachers in Maine who live with 30 miles of Kennebunkport, they’re the only game in town. I hope that the next big wave has the same targeting ability. +1 on Google’s +1 because it might enable the ability to narrowcast.