Facebook doesn't participate in do-not-track, but you can opt out of being tracked on the Digital Advertising Alliance's opt-out page. iOS and Android also have settings that let you manage your web-tracking preferences.
The social network isn't the only company to monitor your activity to target ads to you. Its direct competitor is Google, which reads your Gmails to serve you relevant display ads. If you use the Internet today, you're giving up a measure of privacy for the use of free services.
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