NBC streamed all its NBCOlympics.com videos using Microsoft's Silverlight backend tech, but the network dumped Microsoft before last night's NFL kickoff — streamed live over NBCSports.com and NFL.com — opting to use Adobe Flash instead. Why? Because, as SAI notes , while 40 million US visitors to NBCOlympics.com didn't have Silverlight installed, Adobe Flash is already installed on some 98 percent of Internet-connected computers. NBC's move didn't pay off last night. The feed was unwatchable over a broadband connection, serving up freeze fames, blurry action and skipping back and forth as the it tried to buffer.