From a small biz perspective, this is a great example of how powerful social media is and how quickly it can catch on for a small biz operator with a good value proposition and a little willingness to experiment. Check out the whole NY Times article for the skinny.

For Mr. Kimball, who conceded that he "hadn't really understood the purpose of Twitter," the beauty of digital word-of-mouth marketing was immediately clear. He signed up for an account and has more than 5,400 followers who wait for him to post the current location of his itinerant cart and list the flavors of the day, like lavender and orange creamsicle. , Marketing Small Businesses With Twitter - NYTimes.com

So, what's your small business doing to get engaged in social media today.