I am surprised that he says he is still focused on having more users. Twitter already has, in my opinion, a quite large (mostly techie) user base, the numerous

I am surprised that he says he is still focused on having more users. Twitter already has, in my opinion, a quite large (mostly techie) user base, the numerous whales would approve. Figuring out how to make money out of it would be nice for them now, probably with advertisement tweets.