After many years trying to compete with Google with the same technology, it seems that Microsoft will give priority to the semantic search. In an attempt to take the leading position in the new paradigm of the Internet, the semantic web, Microsoft's new search engine will in theory be able to answer your questions rather than interpret your keywords. For example, if you want to know the name of the team who won the last Champions League, in Google you would write something like Champions League winner 2008, whereas in kumo.com you would ask directly who won last Champions League?
Although it doesn't seem a huge change from the user prospective, the technology used to interpret your query is completely different. The outcome of this new battlefield is still very uncertain. Semantic search is superior in theory, but it is also much more complex to implement so results might not be as good as the ones you get with Google. Askjeeves.com was a pioneer in this field and was never able to compete with regular search engines. It will be exciting to see if Kumo.com (which means cloud in Japanese) will do better. If it does, then Google dominance in ad search will be threaten too, because Kumo would be able to interpret better the intention of your search (buying, gathering information, listening a podcast, ...) and therefore choose more relevant ads for you.
