What about discovery of sites you don’t know about. The whole purpose of he internet is that we’re all connected, but you seem to want only an extended private network.

A surprsingly large amounts of time I use Google, is to mainly to search on either reddit, stackoverflow, hackernews etc. Even searching for other sites is helpful using those sites i.e. searching for developer blogs gets far better results if I add reddit to it.

I think Google has it's place. However, I also think that an additional search engine like the one I described would be a very nice and useful tool. At least for me.

Google fails miserably over there too.

First page is full of results from a handful of sites.