According to Bleeping Computer, a new feature in the latest version of the Firefox browser prevents websites from tracking you across websites. There are strings of characters added to the end of an URL that allow companies to track your clicks and serve targeted ads.
You've probably seen these queries when you click on a link from a social networking site. It might show something like "https://www.engadget.com/example.html" instead.
A query is a string of characters after the question mark that tells a company if you clicked on a link. If you enable the stripping feature in the latest version of the browser, it will remove the characters before you load the website. It works by using a blocklist and covers a lot of companies.
You can enable the feature by selecting "Strict" for "Enhanced Tracking Protection" in the privacy and security settings. Bleeping Computer points out that you can turn it on in Private Mode by typing "about:config" in the address bar and searching for strip.