AP, others use new software to track users-Business Week

"The AP, a not-for-profit news cooperative owned by thousands of subscriber newspapers, has been using a system from Redwood City (Calif.)-based startup Attributor. Like other content recognition systems, Attributor's software extracts a small digital fingerprint—a string of bits unique to a given article, song, or video—and collects them in a database. Then it continually crawls billions of Web sites and blogs, much as Google does when a user launches a search"...

• From Business Week article, "Bloggers, Big Media is Watching," 6/25/08, by Peter Burrows, via Poynter.org/Romenesko

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