Edward J. Markey

If you post something on Facebook, let there be no doubt that it can end up as an ad shown to your friends and acquaintances. Facebook pressed forward on Friday with official changes to its privacy policies, first proposed in August, that make the terms of using Facebook more clear than ever: By having an account on the service, its 1.2 billion global users are allowing the company to use their postings and other personal data for advertising. And teenagers are no exception. Although the company deleted language that said parents

The Web giant announced Tuesday that it plans to follow the activities of users across nearly all of its ubiquitous sites, including YouTube, Gmail and its leading search engine. Google has already been collecting some of this information. But for the first time, it is combining data across its Web sites to stitch together a fuller portrait of users. Consumers won’t be able to opt out of the changes, which take effect March 1.

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