Mullin, Joe. "How Much Do Google and Facebook Profit from Your Data?" Ars Technica, October 9, 2012.
From the article: "Savvy Internet users know that all the great stuff they get from the Internet for "free"—the searches, the social networks, the games, even the news—isn't really free. It's an exchange, where companies are able to take user data, sell it to advertisers, and make money that allows them to give themselves a paycheck while keeping you afloat in free digital services.
So that data you're giving away online is worth something, but have you ever taken a stab at figuring out how much? A just-released privacy add-on for Firefox and Chrome, Privacyfix, gives it the old college try. Both Congress and the executive branch have been talking more about online privacy in the past couple years.
The estimates for Google and Facebook are imprecise, as the program's creator, Privacy Choice founder Jim Brock, readily admits. "We wanted people to understand, it is a value exchange" when they use these sites, said Brock." Read more