There has been some discussions regarding how to create a niche search engine that can nibble at google's market share. Here is my (free) idea: create a search engine for connections. Instead of searching for a single thing, let the user enter several "things" and try to find the connection between them.
I am personally very interested in any new search engine niche, but I need your help in telling me a bit more about your Idea. Can you please describe a simple scenario and explain how can this be helpful to you?
It's a very interesting concept but I fail to see where it will really be useful? Can you give me an everyday example of when you'd need to search for the intersection of two concepts?