Millions of television show episodes have been streamed over the Web by broadcast networks over the past month, with "Heroes" and "Jericho" emerging as favorites among people who watch TV on their computers.
Within the past month, ABC, CBS and NBC have begun making some of their entertainment programs available for free download. Fox is set to begin after the World Series.
They all claim a rapidly growing appetite for news and entertainment on the Web, but are reluctant to release specific details.
NBC says it has streamed 5 million individual episodes of its shows, and ABC said it streamed more than 2.5 million in the first two weeks.
Those numbers are still tiny compared to the number of people who watch TV: nearly 23 million people watched "Grey's Anatomy," the most popular show on TV, last week.
For prime-time shows, the bulk of computer viewing is done to catch up on an episode missed on TV, and is often done within a day of when the shows air, said Albert Cheng, ABC's digital chief.
"I will not lay claim to reducing productivity in the workplace," Cheng said.
ABC last fall began selling episodes of some of its popular shows through iTunes, setting off a rapid transformation that networks are still in the midst of. This Sept. 22, it began making video streams of six of its most popular shows — including "Grey's Anatomy," "Desperate Housewives" and "Lost" — available on ABC.
com the day after the episodes air. Individual episodes remain available for four weeks.
The network is experimenting with shows that it believes fits the profile of an online viewer, he said.
The average age of ABC's online viewers has been 29; for television viewers, it's 46.
While the networks know how much each of their shows are being watched online, none will divulge the details. CBS and NBC revealed which of their shows rank No.
1 online — "Jericho" and "Heroes," respectively. ABC wouldn't even go that far. Cheng claimed cryptically that online viewing habits were similar to TV, which indicates top-rated "Grey's Anatomy" led online, too.
Nielsen Media Research is developing a third-party measurement system for TV viewing online, but it's at least 18 months from being ready, spokeswoman Karen Gyimesi said.
"It's a new business, and you're hesitant to give out too much information," said Jeff Gaspin, head of NBC's digital unit. (Story Continues On Next Page.
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