Lots of Twitter dialogues going on during Super Bowl. The Twitter/SuperBowl page was the official Twitter feed. The New York Times mapped tweets about the game.
Advertisers also got into the game, as WSJ reported, including: H&R Block (see image); Pepsi; Overstock.com; E*Trade.
Who had time to watch the game with all this tweeting? But seriously, good experimentation. Big question: Do these advertisers have a real strategy for building on these Twitter dialogues?