The case centered on whether YouTube qualified for a safe harbor created by the Digital Millennium Copyright Act of 1998 (DMCA).

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In a hearing last month, Napster lost its attempt to portray itself as a "mere conduit" for information, which would have granted it protection under the Digital Millennium Copyright Act of 1998.

CNN: Napster takes the defensive

Encryption codes like the one revealed on Digg are covered by the 1998 Digital Millennium Copyright Act, a notoriously murky piece of legislation.

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