According to Robert Moore of RJ Metrics, "a on-demand database analytics and business intelligence startup that helps online businesses measure, manage, and monetize better", who published on TechCrunch a well-detailed article on Twitter data from an investor' s perspective, I belong to the smallest portion of Twitter users, with more than 500 followers, over 500 updates, and more than 3,200 tweets sent (excluding the 1,400+ tweets from auto-RT of @FiberNews).
Now the question is: how do I monetize my status ? ;-)
I strongly recommend that you read this article: it's full of interesting informations on how people do use Twitter. For Marketeers of all sorts, that's a gold mine.