I believe the U.S. court of appeals wiretap ruling is flawed. I would say that if Google had collected information from open unsecured wireless networks, especially if they captured it from the streetview car while on the street, then they should be exonerated. This is akin to walking down the sidewalk, and viewing your neighbors in compromising situations or their belongings or goods when they have their curtains wide open. There is no expectation of privacy if those acts or your belongings are viewed from the public venue. On the other hand, If you walked up to your neighbors windows, while their shades were drawn, and tried to peek inside, your neighbors not only have the expectation of a right to privacy, but you would also be trespassing.