A few failed ideas from the past 10 years that we're welcoming home.
Idea: Buying a car online--painlessly Look out for: Zag.com, still in development, which will let customers do the hitherto impossible--complete the purchase online.
Idea: Same-day delivery Look out for: Ensenda, a behind-the-scenes service (Best Buy and Ikea are customers) designed to speed home delivery of large items. Instant Web gratification at last.
Idea: Used DVD barter (one man's trash is another man's . . .) Look out for: Peerflix, which capitalizes on cheap DVD proliferation, the general un-rewatchability of movies, and the growth of peer-to-peer commerce. Anything to get Rudy and Elf out of the house.