A year and a half ago I blogged about the case of Steven Warshak, whose email the US government had obtained without a search warrant. At that point the opinion of the court was that no warrant was needed to obtain your email from your ISP. The reasoning was a bit like the original court view of telephone wiretapping–no warrant needed, since after all, what did you think was going to happen to your conversation once it left the confines of your house?