There is so much to say. In practice, DDG revenues depends on tracking visitors. DDG asks third-parties to track (Yahoo/Bing ads), so if someone asks "do you

There is so much to say. In practice, DDG revenues depends on tracking visitors. DDG asks third-parties to track (Yahoo/Bing ads), so if someone asks "do you track? NO! WE DON'T". They don't need to create a user profile, the keyword based ads pay enough. This is the catch, "we don't track, but we ask our partners to do it for us". The same with Amazon affiliate revenue. Did you know that DuckDuckGo had access to the whole history of items bought through their affiliate link ? It's a detailed item list, like "3 x Happy Belly Dried Mango, 500 g" Every, single, item. No tracking (◠ ‿ ◠)