Yahoo and DuckDuckGo
Yahoo has been working with DuckDuckGo for several years and receives search queries and non-personally identifiable information from DuckDuckGo in the context of providing search content for their results.
Does Yahoo collect personally identifying info from DuckDuckGo?
Unless explicitly provided by users through the search queries themselves, Yahoo does not receive any unique identifiers of individuals conducting searches on DuckDuckGo. Yahoo does not attempt to identify individuals through their use of the DuckDuckGo search services.