Although 75 million people had signed up for a Twitter account by the end of 2009, only 17 percent sent even a single Tweet in December ‘09, an all-time low for the micro-blogging service, research from RJMetrics has found.
Overall, in the three years since it began, 40% of Twitter account holders have never sent one Tweet and 80% have sent less than ten.
By Furlong PR, Jan 28th 2010