I'm working off the thesis that combining highly relevant vertical results is the best way to combat SEO.
As a fun aside, when I did a Show HN for this tool, the title was "Runnaroo, a new search engine that didn't raise 37.5M to launch" as a friendly joke toward Neeva. Dang changed it later to be just "Runnaroo, a new search engine."
[0] Example search for "bose headphones reddit": https://www.runnaroo.com/search?term=bose%20headphone%20redd...