Perhaps no topic in technology attracted more attention in 2011 than the rise of social media and its potential impact on news. “If searching for news was the most important development of the last decade, sharing news may be among the most important of the next,” we wrote in a May 2011 report analyzing online news behavior called Navigating News Online.

The migration of audiences toward digital news advanced to a new level in 2011 and early 2012, the era of mobile and multidigital devices. More than three-quarters of U.S. adults own laptop or desktop computers, a number that has been stable for some years.1 Now, in addition, 44% of adults own a smartphone, and the number of tablet owners grew by about 50% since the summer of 2011, to 18% of Americans over age 18.

A joint study by the Pew Research Center for the People & the Press and the Pew Internet & American Life Project takes an up-to-date look at the potential biases in findings based on landline-only surveys.