I 100% agree with that comment, Reno. This could never be used as the only method to power a top search engine. New content is a good example - how do you get that to fit in to the results? Just because no-ones been there yet, doesn't mean its not good.
Microsoft may be onto a good thing, and I'm looking forward to seeing if this does deliver better results, but they still need to improve their general relevancy and linguistic intelligence to compete with Google.