This is a slower, slightly more comprehensive version of talk that I gave on a panel discussion of Google and Antitrust at the American Enterprise Institute on October 5, 2012. That panel was broadcast on C-SPAN and you can play the full discussion at http://goo.gl/AwzTp . The video of my talk moves back and forth between me and the slides, while this is just a voiceover over the slides, but without time constraint, so slower and more complete.