Thanks! Yeah, we've gotten a lot better since then. On the zero-click info (what is x?) we use lots of sources now beyond Wikipedia (e.g. Crunchbase) as well as have a bunch of new features (http://duckduckgo.com/about.html). We also have both an iPhone app and an API :)
iPhone App: http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftwa...
API info: http://duckduckgo.com/api.html