One of the best blogs out there to learn about twitter comes from Darren Rowse, it's called TwiTip, it's not very old, but has taken off and gained a mass following.
Recently there was a race to see who could reach 1 million twitter users faster, ashton kutcher or CNN. One man against the biggest news network on the plannet!!!!!....
To no one's surprise the winner was @aplusk (Asthon Kutcher).