Bloomberg Opinion columnist Barry Ritholtz speaks with Dave Portnoy, who founded the blog Barstool Sports in 2003 and has since built it into a sports media powerhouse. The company was recently valued at $450 million. See omnystudio.com/listener for privacy information.

Bloomberg Opinion columnist Barry Ritholtz speaks with high-profile car critic Doug DeMuro, whose YouTube channel has more than 3 million subscribers. In addition to creating videos, DeMuro has written for Autotrader, Jalopnik, GQ and The Week, and has appeared as a guest on "Jay Leno's Garage." He recently launched the modern enthusiast car auction site Cars & Bids.  See omnystudio.com/listener for privacy information.