DuckDuckGo has no warnings published on PrivacySpy. PrivacySpy publishes warnings when it learns a service has announced a data breach or is found misusing user data. If you believe a warning should be published for DuckDuckGo, submit one here.
Similarly, we may add an affiliate code to some eCommerce sites (e.g. Amazon & eBay) that results in small commissions being paid back to DuckDuckGo when you make purchases at those sites. We do not use any third parties to do the code insertion, and we do not work with any sites that share personally identifiable information (e.g. name, address, etc.) via their affiliate programs. This means that no information is shared from DuckDuckGo to the sites, and the only information that is collected from this process is product information, which is not tied to any particular user and which we do not save or store on our end. It is completely analogous to the search result case from the previous paragraph--we can see anonymous product info such that we cannot tie them to any particular person (or even tie multiple purchases together). This whole affiliate process is an attempt to keep advertising to a minimal level on DuckDuckGo.