"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.