This could mean, for instance, that when users search via Google, the company will use their activities on sister sites like Gmail and YouTube to influence those users' search results. Google has not done that before.
Google's move -- which was disclosed in a privacy policy that will take effect on March 1 -- is a sign of the fierce competition between Google and Facebook over personal data. Facebook has amassed an unprecedented amount of data about the lives of its more than 800 million members -- information that is coveted by advertisers. (more)
