When you use DuckDuckGo with the built in search in Firefox I noticed it adds this query parameter "t=ffab", which changes the returned search results. 
Anyone know what's with this?Example: example searches for "IMDB Game of Thrones" with the added "t=ffab" query parameter. This does not return IMDB in the search results.If you remove "t=ffab" from the query parameters, IMDB appears at the top of the search results.