When I enter a search term in the firefox address bar, I noticed that "t=canonical" is always inserted in the URL where the search results are displayed. What exactly does this do? Does it have any implications for my privacy?
Note: In debian 9, I get 't=ffab' in the search url instead.
Taken from here:
The t=mageia is intentionally added in the search configuration, as Mageia gets a tiny amount of money donated to it from duckduckgo for making it the default search engine in most of the browsers.
In your case canonical. I guess they receive some money for making google default search engine. More here
