Just the pace of this brilliant video is overwhelming: it does a great job of conveying the staggering pace of social media adoption worldwide.
Another clip really worth checking out is Kevin Kelly speaking at TED.com; he points out that the web is only 5000 days old! His predictions for the next 5000 days are thought provoking.
httpv://www.youtube.com/watch?v=sIFYPQjYhv8