The Pew Research Center's Internet & American Life Project completed a study in Nov. 2010 about who uses Twitter. With the zeal that every entity from US Senators to mass media companies promote their presence on Twitter, one may get the impression that everybody is using it. You may be surprise by some of the findings from this study. Here are some highlights:

In the last several breakfast meetings the conversation has eventually turned to the topic of social media. I found this presentation from research-based advisory firm Altimeter Group, on Mashable, and thought many may find it interesting as we try to understand how to incorporate this new marketing process into our overall strategy.

http://www.slideshare.net/jeremiah_owyang/how-corporations-should-priori...