ReadWriteWeb

Web security SaaS company Purewire evaluated the profiles of millions of Twitter users to show the depth of a new tool it has created called Tweet Grade. While the tool itself is not unlike numerous other Twitter grading services, the company has uncovered some very interesting user statistics. It seems as though far fewer people are actually using and contributing to the site than Twitter's recent hype and massive growth would suggest. In fact, the data shows that a large percentage of Twitter users have not "tweeted" since the first day they joined the service and at least a quarter of its users don't have any followers at all.