[Posted by Nate Elliott. Follow me on twitter.]

Yesterday we published a case study that I'm really excited about, covering how the NHL used tweet-ups to create excitement for the 2009 Stanley Cup playoffs. The league worked with fans to organize a series of events that took place simultaneously around the world on the opening night of the playoffs. I had a chance to attend the tweet-up in Vancouver, and thought they were a great example of the power of both online and offline influence.