http://www.economist.com/blogs/schumpeter/2014/03/newspapers
A FEW years ago the prospect of convincing readers to pay for news online seemed as faint as ink on a damp newspaper. But the New York Times has managed to prove many naysayers wrong. In 2011 it introduced a pay “meter” that limited the articles that casual readers could access, and successfully convinced more people to pay for content. Today it has around 760,000 digital subscribers, although growth has slowed in recent quarters.