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Search engine user profiling

The practice of search engines storing user search history and building user profiles

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Jan 27, 2026
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What information does DuckDuckGo collect for search personalization or advertising?

’s published stance is clear: it does not build personal profiles from users’ searches or browsing history for , and search ads are served based on the contents of the search results page rather than ...

Feb 7, 2026

What exactly does Duck.ai store and how does deleting Duck.ai chat history via the Fire Button affect it?

keeps a copy of recent conversations on the user’s device — not on ’s remote servers — and the built‑in “Fire Button” can remove those local chat records, though pinned chats and certain backend reten...