Over the weekend, my family and I dropped in to a big box electronics retailer to pick up a copy of the Wall-E DVD. After a fruitless search of the shelves, we finally tracked down an employee who advised us that their system suggested they had two copies in inventory, but he had no idea where they were. Frustrated, we picked up another item we needed and checked out. Nobody asked us if our shopping experience had been a good one. I went home and bought the DVD on Amazon, and therein lies the story of an existential crisis in retailing. By the way, this wasn't a story of Circuit City, who on Friday announced that they had lost their fight to remain solvent and would liquidate - eliminating 34,000 jobs in the process. In an ironic twist, circuitcity.com is now pointing to a URL with the word "closed" in the title and showing only a letter to customers, not the usual commerce site. It was, after all, the internet that put them out of business.