We find that our users really like disambiguation. I find it most useful on searches for people (https://duckduckgo.com/?q=Doug+smith) or places (https://duckduckgo.com/?q=Deerfield).

Re: local search, we're bringing in datasets from services like Yelp. For an example see: https://duckduckgo.com/?q=Wood+tavern. We're always looking to improve, so if you've got interesting local data, please reach out.