Marketing software startup HubSpot has put together its third ‘State of the Twittersphere’ report, which is based on an analysis of more than 5 million Twitter accounts and 6 million tweets, collected by the company’s free Twitter Grader tool.

The main take-away from the report (PDF): peaking at around 13% in March 2009, growth in new Twitter users has recently slowed down significantly, dropping… → Read More