This year we've gotten one question more than any other from listeners: is Facebook eavesdropping on my conversations and showing me ads based on the things that I say? This week, Alex investigates.
Our guide to keep Facebook from following you around the internet can be found at http://replyall.limo/donttrackme .
Facebook's official statement that it is not listening to users.
Facebook's Rob Goldman (no relation) denying the same thing.