QuoteThe NBC spokeswoman said the network had no intention of blocking the show but declined to specify how the error was made. Flags that have been issued accidentally aren't uncommon, some industry insiders say. While acknowledging that it "fully adheres to flags used by broadcasters," Microsoft said that it was working with content owners to reduce the number of false flags. "The success of the entire distribution chain is dependent on all involved maintaining the necessary checks and quality control so that coding is correctly applied," a Microsoft spokeswoman wrote in an e-mail to News.com. Meanwhile, the larger issue for some is that Microsoft and possibly other hardware and software makers will honor broadcast flags. "Customers need to know who Microsoft is listening to and how that affects their equipment," said Danny O'Brien, a staffer at the Electronic Frontier Foundation, an advocacy group for Internet users.