According to the site, approximately 44 percent of Twitter’s 947 million accounts or so have never sent a single tweet. Of the number that have — approximately 550 million — just under half of these accounts are reported to have sent their last tweet more than one year ago (43 percent). Only 126 million have sent any kind of tweet at any point in the past 30 days.

via 44 Percent of Twitter Accounts Have Never Tweeted | News & Opinion | PCMag.com.

What Twitter has said, however, is that the service had a count of 241 million average monthly active users as of December 31 last year – a 30 percent increase over the same time period one year prior.