Are We Just Waiting for Another Tech Bubble? Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Logo of WhatsApp, the popular messaging service bought by Facebook for USD $19 billion, seen on a smartphone February 20, 2014 in New York. ( STAN HONDA/AFP/Getty Images ) Produced by Jillian Weinberger Hosted by Todd Zwillich Produced by PRI and WNYC