As you haven't mentioned what exactly your search engine will focus on, I'll just throw this idea out there. I would love a search engine that returned results equivalent to Google, yet offered me the privacy level that I desired. With Google, currently I am the product. I know this. I understand this. Thing this is, I don't want to be the product any more. I want to pay for the product on say a yearly fee which guarantees me I won't be sold ads or have my search habit information sold.
It seems like a nice idea. But I use other Google services like GMail, Google Docs, Google Maps, etc. If I switched to duckduckgo but still used the other Google products I'd feel wrong about it. There aint no such thing as a free lunch.
Now if their search results got so bad that other alternatives were clearly superior, that's different. They have an obligation to provide a good service to us the customers too, but we're not there yet. For me.
I imagine the opportunity for Google to offer this sort of "private search" (perhaps w/ complementing premium features) via mass licenses to (nervous) big corps would be one worth perusing. I imagine also it might be worth those big corps' money.
