By Echo Wang

(Reuters) -Meta Platforms said on Wednesday it would begin using people’s interactions with its generative AI tools to personalize content and advertising across its apps such as Facebook and Instagram starting on December 16.

Users will be notified of the changes from October 7 and they will not have an option to opt out, the social media giant said, though the update applies only to those who use Meta AI.

Meta said users’ interactions with its AI features, whether by voice or text, would be added to existing data such as likes and follows to shape recommendations for content and ads, including Reels and ads. For example, a user talking about hiking with Meta AI could later be shown hiking groups, friends’ trail updates or ads for boots.

“People’s interactions simply are

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