Kara Swisher, Co-Executive Editor
Walt Mossberg onstage.
Kara Swisher takes questions from the audience.
Walt and Kara kick off D4.
Don't distract me – I've got the remote.
Excuse me, where's your D3 badge?
Kara welcomes guests to D3.
Alex Swisher makes his onstage debut with veteran big brother Louie.