Ask HN: What would you build on top of an "open" Google index? Posted by iroy on Tuesday December 18, 2012 @12:07AM from the ask-hn dept. What if Google opened its index and created a search market place? Are there domain/location specific apps that can be built around/on top off those returned results? ( 1 comment | 6 points | on HN )
If it's not free, there's still a concern that Google could borrow your business model.
Basing your business model entirely on the content from a third party service has shown, in recent years, to be a nearly complete disaster.