"So, if you wonder whether Twitter matters for business, remember, if you will, when people new to cell phones used to call each other to report the most trivial details of where they were and what they were doing; remember how blogs at first were thought of merely as personal diaries of no interest to anyone in business, and how they grew up to become the heart of a new media paradigm. For that matter, remember how the personal computer was dismissed by the titans of the computer industry as nothing but a toy.
The future often comes to us in disguise, with toys that grow up to spark a business revolution."
I came across the information about the report through this posting by Guy Kawasaki.
Try Twitter yourself by clicking here.