Thus we evaluate consumers not on their total online time, but on how much of their online time was spent engaged with social media.

FORBES: How Valuable Are Heavy Social Media Users, Anyway?

It leads all U.S. publishers with 23% of online display ad impressions, according to Comscore, and eats up a similar amount of the total time people spend online.

FORBES: Magazine Article

Years of antitrust litigation were a total waste of time: Almost every superstore has succumbed to competition from online sellers, chiefly Amazon.

WSJ: Crovitz: Steve Jobs, Price Fixer?

According to comScore, the top ten web properties online showed that smartphone web and app engagement now represents 35% of total time spent on their properties.

FORBES: Why The Brand Content Trend Is One Marketers Can't Bypass

The Online Publishers Association, a trade group, estimates that all web advertising in America came to about 6% of total advertising expenditures last year, even though consumers spent 23% of their media time online.

ECONOMIST: Internet advertising

In August 2012, iQiyi was ranked as the number one online video platform in China in terms of average time spent per user and number two in terms of total monthly time spent, according to iResearch, a China-based research firm.

ENGADGET: Baidu buys control of streaming video portal iQiyi, raises stakes in China's media wars