As rumored last week Microsoft has announced that it has purchased the natural language search company Powerset:

We're excited to announce that we've reached an agreement to acquire Powerset , a San Francisco-based search and natural language company.

Powerset will join our core Search Relevance team, remaining intact in San Francisco. Powerset brings with it natural language technology that nicely complements other natural language processing technologies we have in Microsoft Research.

More importantly, Powerset brings to Live Search a set of talented engineers and computational linguists in downtown San Francisco. This is a great team with a wide range of experience from other search engines and research organizations like PARC (formerly Xerox PARC).

We're buying Powerset first and foremost because we're impressed with the people there. Powerset CTO and cofounder Barney Pell is a visionary and incredible evangelist. When he introduced our senior engineers to some of the most senior people at Powerset — Search engineers and computational linguists like Tim Converse, Chad Walters, Scott Prevost, Lorenzo Thione, and Ron Kaplan — we came away impressed by their smarts, their experience, their passion for search, and a shared vision.

That shared vision is to take Search to the next level by adding understanding of the intent and meaning behind the words in searches and webpages.

Link: Windows Live Blog