Paul Quigley of Dublin-based Newswhip.com writes:
Today, Mashable published our infographic of the most viral news sources in the English language. The infographic ranks news sites based on how many viral stories they produced during the month of January 2012. We define a viral story as one getting at least 100 likes or shares (on Facebook) or 100 Tweets (on Twitter). We collected all this data using NewsWhip’s discovery and data collection engines. They discover almost all the free news and major blog posts produced in the English-speaking world each day, and track how they spread on social networks. One thing we’re missing: sites with paywalls and partial paywalls. Hence NYTimes.com, WSJ.com and FT.com are not included.While we only use the data temporarily – to build a picture of what’s taking off in real time – we collect it, to make a neat data set.
From that, we extracted the following: