The number of challenges to the US recording industry's approach to copyright infringement is on the rise. But a new challenge, by Harvard law professor Charles Nesson, has "opened a new front" in the battle between the RIAA and music file-sharers, Computerworld reports. It challenges the constitutionality of the statute the RIAA has used in thousands of cases against file-sharers. Nesson argues … [Read more...] about Harvard prof on RIAA anti-piracy tactics