Any site with content — Google, Amazon, a newspaper, a blog, an ISP — is now the moral equivalent of a library or bookstore, two institutions that try hard not to hand over information on what content we seek and consume arguing that that would violate our First Amendment rights. The controversy in the telco immunity legislation is that those searches were made without warrants. In this case [Viacom/YouTube], there is a warrant. When I ran sites, we got subpoenas all the time and handed over IP addresses when ordered; that was company policy. I always found it troubling and as a result ordered that we would change our data retention policy and get rid of IP addresses as soon as possible. Should Google and other sites erase IPs and rely only on cookies without personally identifiable information?