Brian Dunning spoke to Googlers in Mountain View on May 20, 2011 about his series of podcasts on http://skeptoid.com. Skeptoid generally examines four basic types of popular pseudosciences: 1. Consumer frauds, like magic jewelry and free energy 2. Urban legends, like the Amityville Horror or the Philadelphia Experiment 3. Useless alternative medicine schemes, like detoxification and reflexology 4. Conspiracy theories, like chemtrails or 9/11 "truth" theories