"With the low loyalty numbers, there's a risk of being displaced," Enderle said. "They need to become a much more permanent part of our life."

"If they don't, they likely won't survive the decade," he said. "It would be relatively easy to come up with something that does a lot of what they do, and it's too easy for users to switch."

Sharon Gaudin covers the Internet and Web 2.0, emerging technologies, and desktop and laptop chips for Computerworld. Follow Sharon on Twitter at or subscribe to . Her e-mail address is .

in Computerworld's Web 2.0 and Web Apps Topic Center.