Twitter has been the topic du jour recently especially after the recent antics (Aston Kutcher vs CNN) and star power ( Celebrity Tweeters Give Twitter a Huge Boost) driving even more attention to it. A lot of people have been asking me what all the interest is about and I’ve been a bit pressed to come up with an explanation that captures the essence of Twitter in a way that appeals to everyone. In doing my normal rounds I came across a pretty powerful video that does a more effective job of explaining what I was trying to. In this TED talk, Twitter co-founder Evan Williams reveals that many of the ideas driving their skyrocketing growth came from unexpected uses invented by the users themselves. This video captures a few of the reasons why Twitter is so powerful.