You Tube-Viacom Back On

A court decision puts the Viacom-YouTube copyright lawsuit back on the front burner, and Roger Parloff explores what this could mean: "[T]he decision by the U.S. Court of Appeals for the Second Circuit is of tremendous ongoing interest to the tech and content industries because it fiddles with bedrock definitions that determine the outcome of a crucial recurring question in our Web 2.0 world: When are Internet companies liable for their users' online copyright infringing activities?"