epchong

I agree with you. However, you can run your own instance of searx if you don't trust anyone. In case of DDG you don't have this option.

I am not sure that partnership or ownership really changes anything. But I hope I am wrong about it. :)

How easy it is to add new search engines? What if I want to add for example internet archive search engine?

Well, DDG is owned by Yahoo... Also, it is not open source completely. So you cannot know if it is really tracking you or not.

It does not seem to be limiting incoming requests by IPs. So IPs does not need to be stored anywhere.