I'm the creator of Runnaroo.

Nope, not related to Brave, but there maybe conversations soon to add Runnaroo as one of the default search options in Brave.

We are exploring different ways to monetize, and wanted to make possible options upfront in the privacy policy. I am always open to feedback or suggestions. Whatever direction we end up going, the core focus is always preserving user privacy.

Is there any specific reason affiliate links are worrying? It is currently one of the main ways DuckDuckGo monetizes