Internet users are spending nearly half their online time visiting content, a 37% increase in share of time from four years ago, according to the Online Publishers Association (OPA). The OPA today announced a four-year analysis of its Internet Activity Index (IAI), a monthly gauge of the time being spent with e-commerce, communications, content and search.

“When the OPA created the IAI, our goal was to provide a reliable, ongoing measure of the time being spent with key online activities,” said OPA president Pam Horan. “For the last four years, the IAI has identified important trends in Web use and added to our understanding of consumer engagement online. As seen by Nielsen//NetRatings’ recent introduction of the ‘Total Minutes’ metric, time spent helps to define engagement and serves as a valuable supplement to other key measures.”

According to the OPA’s IAI, conducted by Nielsen//NetRatings, communications accounted for 46% of consumers’ time online in 2003. A dramatic shift has taken place since then, with consumers now spending 47% of their time with content, compared with 34% four years ago. The 37% gain in share for content is followed closely by a 35% gain in share for search. However the total time being spent with search remains relatively low, accounting for just 5% of Internet users online time in 2007.

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