The changing face of news after Boston

[Commentary] I am a veteran print guy and have treated Twitter as an offshoot of what I do the rest of the time. But I have never thought of it as a primary source of news until the events in Boston and, in particular, the manhunt that took place in Cambridge and Watertown a few days after the bombings. News has moved to the digital sphere, but how we manage that shift is still evolving, and the shape of future journalism still unclear. We have seen glimpses of what it might be, but that's what they are -- only glimpses.