Firefox's address bar has become an ad-stuffed privacy nightmare
Mozilla has just released Firefox 93 and there is a big and controversial change to the address bar. Not content with making helpful suggestions from your browsing history as you type, Firefox Suggest now also includes "relevant suggestions" and "sponsored suggestions" from "trusted partners"; in other words, ads.
There are privacy concerns associated with making these suggestions. Mozilla may insist that it only deal with partners that meet its privacy standards for Firefox, but it still means that whatever is typed into the address bar is sent back to Mozilla and processed in order to deliver ads it hopes you will click on. The good news is that you can disable Firefox Suggest and hide ads in Firefox.