AARON PERLUT, of the digital marketing firm Elasticity, via Skype, on St. Louis having more social media mentions related to Amazon's HQ2 than any other city; KAREN WEISE, Bloomberg News reporter in Seattle, via Skype, on how being a company town for Amazon has changed them, and a round-up of the HQ2 bids from across the continent; plus St. Louis County Executive STEVE STENGER, on Amazon's HQ2