This is sure to chill all of the newspaper and magazine companies that thought subscribers would return to the fold once the content became available on the sexy mobile devices. The finding comes from the most detailed study yet of the 11% of the country that owns a tablet, conducted by the Pew Research Center’s Project for Excellence in Journalism in collaboration with The Economist Group. They found that 53% use their tablets every day to catch up on the news — making that the second most popular activity after Web surfing (67%). Tablet news fans like to check out different sources, including many they never look at on TV or their PCs. And it isn’t just for headlines; 42% say that they read long news articles or analyses. But only 21% say they’d be willing to pay as much as $5 a month for news on their tablets. That jibes with other data showing that 14% say that they’ve paid directly for news on their tablets, although 23% have subscriptions to newspapers or magazines that include digital access. For the most part, owners use the portable screens as a substitute for the news that they used to track on their PCs or laptops — but nearly six in 10 also use their tablets as a substitute for newspapers, magazines, and TV newscasts.