Earlier quoted context omitted.
DDG doesn't have their own index (they're getting their results from Bing) so not really relevant to this question.
I.. didn't know that. However, trying it just now in incognito I don't get the same results[0] (some different links, and most re-ordered). Is Duck repurposing Bing's results? I've tested with "how to get rich", a great bait for bad content (try it on Google without an adblocker, if you dare). [0]: https://pastebin.com/xC45hL1i
Bing:
1. How to Get Rich: 10 Things Wise and Rich People Do
2. 5 Ways to Get Rich - wikiHow
3. 16 Proven Ways On How To Get Rich Quick (2021 Edition) - TPS
4. How to Get Rich - NerdWallet
5. How to Get Rich: Follow our Step by Step Plan to Build ...
DDG:
1. How to Get Rich: 10 Things Wise and Rich People Do
2. 5 Ways to Get Rich - wikiHow
3. How to Get Rich - NerdWallet
4. 16 Proven Ways On How To Get Rich Quick (2021 Edition) - TPS
5. How to Get Rich: 8 Steps to Make Your First Million ...
It's no secret that DDG is using Bing so they're not trying to hide it. An easy way to verify it is to search for "what is my ip" on DDG and look for results where the IP number has been cached in the snippet, e.g.:
www.myipnumber.com What is my IP number - my IP address - MyIpNumber.com What is my IP Number? The IP Number of this machine is: 157.55.39.192. This number can also be represented as a 32-bit decimal number 2637637568, or as a 32-bit hexadecimal number 0x9D3727C0 . (Note that if you are part of an internal network then this is the IP number of your local server, the machine which is connected to the external ...
If you do an IP lookup on 157.55.39.192 you will see that it's in fact "Microsoft bingbot".