Twitter CEO: 'Irresponsible' to focus on business plan now

There's a related article in current issue of Wired [http://www.wired.com/magazine/2009/10/ff_twitter/]:

The company’s revenue will be a modest $4 million or so this year. Even so, Twitter reportedly turned down a $500 million acquisition offer from Facebook last November and seems perfectly happy to burn through its roughly $150 million in investor funds...

Though the company held a discussion earlier this year called “What Do We Want to Be When We Grow Up?” the mission statement is still a work in progress. “If there are three sentences I’d use to describe Twitter,” Stone says, “one of them would be ‘I don’t know.’”