Arthur S. Brisbane, the public editor of The New York Times, turned his attention this week to the newsroom's use of Twitter. He quoted from an e-mail interview with me, which I am posting in full here, with a few tweaks and links. The Public Editor: I’m working on a column about how Times staffers use Twitter: the journalistic benefits, the marketing benefits and any other benefits – as well as the costs, whatever they might be. I am, I confess, a newcomer to using Twitter and wonder whether it is a boon or a waste of time.