Twitter real-time analysis platform DataSift has pushed out official launch in the US today. The British company, which built its commercial filtering and organizing through reams of Twitter data in real time, is moving its headquarters to San Francisco this week.

DataSift was founded in 2008 by Nick Halstead, creator of TweetMeme, and is one of the few companies with GNIP to have a license agreement for analyzing the Twitter stream (200 million tweets per day).

DataSift’s tool extracts value from a seemingly unmanageable amount of information in real-time, offering the possibility of creating your own streams of information.  It leverages input sources from any social services (Twitter, Facebook, Google Buzz, MySpace, Word Press, Digg, and SixAppart) or feeds from any blog or website.

The company is one the two companies in the world who got a license from Twitter to make Twitter data commercially available for non-display drives.

“Social media has amplified the already fast-paced nature of business today. Companies don’t have the luxury to sift through hundreds of millions of data streams every day, only to second guess the appropriate action,” said DataSift founder, Nick Halstead.

“What they need is definitive access to real-time intelligence that is impactful to their business allowing them to easily and quickly detect and respond to major trending events, social behaviors, customer preferences — and ultimately, avert any impending crises. We have been amazed with the demand for our platform in the U.S. and are opening an office to cater to this demand.”

Ryan Sarver, Director of Platform at Twitter on the expansion of DataSift office in the US said, “DataSift’s expansion shows the market for insights into Twitter’s real-time data is growing and producing thriving businesses. Now, more developers than ever can meet increasing market demands by filtering 250 million tweets a day into instantly actionable information.”

DataSift recently raised $6 million in funding from GRP and IA Ventures just before the US expansion.  Last July the company also raised similar amount of funding from IA Ventures and GRP Partners to be invested in Twitter.

But more interestingly, just before the US launch date, Halstead decided to drop out as DataSift’s CEO and transition the role to Rob Bailey, a former Yahoo executive who most recently served as VP of Business Development at SimpleGeo.