What is Twitter?

Very interesting article on Twitter and its potential use(s). One use explored was in the business world though Enterprises would be very reluctant to use because the information shared could not be controlled. The question is whether the control of that information really buys the business anything or not. It seems obvious that you would not want competitors to know early what your next product is going to be but have studies been done to see if this is actually true?

Link to article here.