Barence writes "PC Pro has a feature on how social networks sold your privacy, which includes some interesting comparisons on the value of different demographics to Facebook. For example, an advert that targets everyone within a 10-mile radius of a medium-sized British town (Dorking) is valued at 28p per click by Facebook's advertising tool. However, targeting single gay men in the area with a preference for nightclubbing raises the price to 71p per click — 2.5x the price of targeting the general public. Such precise targeting also raises other issues. Whittling down ads to target such precise demographics c