Ziff-Davis kills DigitalLife snoozefest"The poor economic conditions have created a very different and difficult dynamic for us this year," says an email explaining the cancellation of next week's DigitalLife Expo in New York. But don't you quit your startup in a panic. Our gadgethound buddies at Gizmodo don't buy the economy excuse. "We think it's lack of serious news draw," writes Wilson Rothman. "Booth after booth after booth of stuff we already covered" at earlier, bigger shows. All I remember from last year was iRobot's gutter-cleaning droid.