cagraham writes "Facebook is currently testing software that would track user's cursor movements, as well as monitor how often a user's newsfeed was visible on their mobile phone, according to the Wall Street Journal. The additional data from such tracking would potentially let Facebook raise their ad prices, as they could deliver even more information about user's on-site behavior to advertisers, such as how long users hovered over specific ads. In order to analyze the extra data, Facebook will utilize a custom version of Hadoop."
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