shredtionary: Recap.

Deranged gunmen slaughtered the innocent and unsuspecting in places that seemed safe, including a suburban shopping mall, a college campus and an Army post. Scandal erupted almost everywhere, from an Iraqi military prison to Wall .... Jack Dorsey, who will create Twitter, has dropped out of New York University and moved to the San Francisco Bay area, where he's about to start a business that will use Internet messages to dispatch taxis, couriers and emergency vehicles. ...