jomo, (edited ) 
Mozilla "privacy first" Firefox will send Mozilla anything you type into the search bar, location data, and whether you clicked on a suggestion.
They use this to show you search suggestions, including ads.
This is from 2021
https://blog.mozilla.org/en/products/firefox/firefox-news/firefox-suggest/They now want to collect more data on what you click on:
https://blog.mozilla.org/en/products/firefox/firefox-search-update/
