I think this will be good for Twitter. Jack will be able to make big identity and design decisions over the next few years with less pushback from the employees and users than any non-founder CEO. He's already begun by declaring that tweets will extend beyond 140 chars, and the response has been apprehension instead of outright rejection. And for Twitter to remain competitive with Facebook, even as Facebook builds Notes and live-streaming video to cater journalists, Twitter is going to need to make many of these decisions.
