Arstechnica

Filtering all Internet traffic to look for signs of illicit file-swapping has been a hugely controversial idea, criticized on grounds of privacy, efficacy, cost, and long-standing “safe harbor” principles that apply to network operators such as ISPs and phone companies. But a new study out from UK media lawyers Wiggin suggests that, if it works, such filtering could actually curtail “digital piracy” by 70 percent.