Hm, the page is not very clear about the scalability of this system. It only says the system performs 130k queries per day (~ 1.5 requests per second).
This page (http://searchengineland.com/by-the-numbers-twitter-vs-facebo...) claims that google search handles 34k requests per second.
I'm yet to see someone describing how you can easily create something completely descentralized that is able to achieve such a high performance.
And I'm talking only about speed. If you throw other issues like quality of results, privacy, dependability, how to get traction, and so on, the thing becomes insanely difficult.
If it was so easy to do this kind of stuff, someone would already have done it.
I'd like to hear more about that. An easy to build distributed system able to take the same computing/network load of google? Man, that would be awesome.