Firefox by default sends search queries to your search provider to help you discover common phrases other people have searched for and improve your search experience if your selected search provider supports search suggestions… Learn more, including how to disable this feature…
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If you enable “Improve the Firefox Suggest Experience,” we and our partners may also receive your search queries.
So it sends search queries to get search suggestions. I didn’t see it mentioned one way or the other, but I’m assuming Firefox doesn’t send any personally identifiable information with it, though the server probably can track you somewhat with your IP address.
Mozilla is developing a new feature that helps deliver you better information with less effort. It’s called Firefox Suggest and an early version of it is currently available to users in the United States. By default, Firefox Suggest shows you recommended and sponsored content based on local data stored on your own computer, such as websites from your browsing history, bookmarks and open tabs.
Sites you visit: Firefox sends Mozilla which suggestions you click or dismiss and Mozilla may share that data with its partners.
Location data: Firefox temporarily sends Mozilla your IP address which we use to suggest content based on your country, state, and city. Mozilla may share location information with our partners, but partners will not receive your IP address.
Technical & interaction data: Firefox sends Mozilla data such as the number of times Firefox suggests or displays content and your clicks on that content, as well as basic data about your interactions with Firefox Suggest. Mozilla shares information with our partners about how many times suggestions are shown and clicked for verification and feature improvement.
If you choose to enable “Improve the Firefox Suggest Experience,” Firefox shares the following information to improve your browsing experience and to improve the service:
Searches: Firefox sends Mozilla what you type into the search bar and Mozilla may share that data with its partners.
We take measures to limit our and our partners’ ability to identify you. Learn more.
Here’s the actual quote about search:
So it sends search queries to get search suggestions. I didn’t see it mentioned one way or the other, but I’m assuming Firefox doesn’t send any personally identifiable information with it, though the server probably can track you somewhat with your IP address.
Sending queries to partners is optional.
Firefox Suggest and Top Pick
Mozilla is developing a new feature that helps deliver you better information with less effort. It’s called Firefox Suggest and an early version of it is currently available to users in the United States. By default, Firefox Suggest shows you recommended and sponsored content based on local data stored on your own computer, such as websites from your browsing history, bookmarks and open tabs.
Sites you visit: Firefox sends Mozilla which suggestions you click or dismiss and Mozilla may share that data with its partners.
Location data: Firefox temporarily sends Mozilla your IP address which we use to suggest content based on your country, state, and city. Mozilla may share location information with our partners, but partners will not receive your IP address.
Technical & interaction data: Firefox sends Mozilla data such as the number of times Firefox suggests or displays content and your clicks on that content, as well as basic data about your interactions with Firefox Suggest. Mozilla shares information with our partners about how many times suggestions are shown and clicked for verification and feature improvement.
If you choose to enable “Improve the Firefox Suggest Experience,” Firefox shares the following information to improve your browsing experience and to improve the service:
Searches: Firefox sends Mozilla what you type into the search bar and Mozilla may share that data with its partners. We take measures to limit our and our partners’ ability to identify you. Learn more.
Wrong section but I misread it and its an opt in.