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Facebook plans mobile ads based on app use

Facebook plans to engage in a new type of mobile advertising based on the apps used by consumers, The Wall Street Journal has reported, citing unnamed sources familiar with the company's plans. The social network, which has 900 million users, would use its 'Facebook Connect' feature, which lets millions log into applications using their Facebook ID and password, to track consumers' apps, and tailor ads accordingly. Facebook may also attempt to track how people use the apps, but a final decision has not been made, the sources said.