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Across the internet economy, companies are compiling masses of data on people, their activities, their likes and dislikes, their relationships with others and even where they are at any particular moment—and keeping mum.

“They are uncomfortable bringing so much attention to this because it is at the heart of their competitive advantage,” says Tim O’Reilly, a technology insider and publisher. “Data are the coin of the realm. They have a big lead over other companies that do not ‘get’ this.”

Amazon and Netflix, a site that offers films for hire, use a statistical technique called collaborative filtering to make recommendations to users based on what other users like. The technique they came up with has produced millions of dollars of additional sales. Nearly two-thirds of the film selections by Netflix’s customer come from the referrals made by computer. EBay, which at first sight looks like nothing more than a neutral platform for commercial exchanges, makes myriad adjustments based on information culled from listing activity, bidding behaviour, pricing trends, search terms and the length of time users look at a page. Every product category is treated as a micro-economy that is actively managed. Lots of searches but few sales for an expensive item may signal unmet demand, so eBay will find a partner to offer sellers insurance to increase listings. The company that gets the most out of its data is Google. Creating new economic value from unthinkably large amounts of information is its lifeblood. That helps explain why, on inspection, the market capitalisation of the 11-year-old firm, of around $170 billion, is not so outlandish. Google exploits information that is a by-product of user interactions, or data exhaust, which is automatically recycled to improve the service or create an entirely new product.

A less quantifiable statistic that may also have impacted the rise of mobile social networking to the point where it has surpassed desktop-based social networking is the fact that it's an activity that taps into how people - normal, everyday people - go about their lives.

"People's social worlds are enhanced by new communication technologies.

"People use the technology to stay in touch and share information in ways that keep them socially active and connected to their communities."

“Our goal is to offer the public interested in investigative journalism a tool where they can find experts’ opinions and experiences about the topic, documents, recommended books and articles as a source to consult, and constant updates on the activities and work being done in the investigative journalism field,”

Our survey of teens also tracked some core internet activities by those ages 12-17 and found:

62% of online teens get news about current events and politics online.