Maybe there are legs after all to that hypothesis on the return of pay-for content – the one Economist publisher Paul Rossi suggested at our Future Of Business Media conference last month. Just 12 percent of European web users paid for online content last year, but that’s due to rise to 19 percent by 2013, a new Jupiterresearch report says: “While free content will continue to dominate, as overall online audiences for all content categories continue to grow, so the number of European users willing to pay for content online will grow at an even greater rate.” That will mean paid content could pull in