To Aim Ads, Web Is Keeping Closer Eye on You - New York Times

The rich troves of data at the fingertips of the biggest Internet companies are also creating a new kind of digital divide within the industry. Traditional media companies, which collect far less data about visitors to their sites, are increasingly at a disadvantage when they compete for ad dollars. The major television networks and magazine and newspaper companies “aren’t even in the same league,” said Linda Abraham, an executive vice president at comScore. “They can’t really play in this sandbox.”