Those other sources are mostly used for special results such as "Instant Answers".
DDG's main search results mostly come from Bing, as the source for that Wikipedia statement reveals:
https://help.duckduckgo.com/results/sources/
> We also of course have more traditional links in the search results, which we also source from multiple partners, though most commonly from Bing (and none from Google).
Anyone can see this for themselves by comparing a number of Bing and DDG searches.
Well either it uses only Bing for images, or it also censors. Because I sure wasn't able to find the picture on DDG.
So either way, as a user of DDG from day one - it's dead to me.
This is concerning.
>showing all users the same search results for a given search term.
I'm definitely not seeing the same search results from DDG on my PC as on my phone (using different networks). So they do show different results based on something.
> DuckDuckGo distinguishes itself from other search engines by not profiling its users and by showing all users the same search results for a given search term.
Also note that DDG doesn’t just rely on Bing.
> DuckDuckGo's results are a compilation of "over 400" sources, including Yahoo! Search BOSS, Wolfram Alpha, Bing, Yandex, its own web crawler (the DuckDuckBot) and others.
Source: https://en.m.wikipedia.org/wiki/DuckDuckGo