Have you ever called TicketMaster to buy tickets for a popular concert minutes after they’re released only to be told the show has sold out? “Can a show really sell out in a few minutes? Yes, thanks to the Internet. Ticketmaster, the ticket agent for pretty much every big concert in America, sells tickets on its Web site, over the phone (via 19 international call centers), at 6,500 domestic retail outlets, and through arena box offices. According to Ticketmaster, Internet orders now make up 60 percent of sales.”