European regulators are investigating whether the practice of posting photos, videos, and other information about people on sites such as Facebook without their consent is a breach of privacy laws, reports the Associated Press. The Swiss and German probes go to the heart of a debate that has gained momentum in Europe amid high-profile privacy cases: To what extent are social networking platforms responsible for the content their members upload? The actions set the stage for a fresh battle between American web giants and European authorities a month after an Italian court held three Google executives criminally responsible for a user-posted video [1]. Any changes resulting from the investigation could dramatically alter the way Facebook, Google’s YouTube, and others operate—shifting the responsibility for ensuring personal privacy from users to the company…