"Shop at Sams!"

The biggest player in B2C is the federal government, topping Amazon.com by half a billion dollars last year. Most of that was generated by Treasurys online sales of savings bonds, T-bills, etc. But $300 million found its way into the general fund via federal Web stores. The Government Printing Office sells CDs, manuals, databases and more. Used military aircraft, radar equipment, ships and trucks are going cheap at the Defense Reutilization and Marketing Service. Some say the feds are competing with private enterprise, but comedians have scoffed free material from the government for years.