At age 22, Whitney Wolfe helped launch Tinder, one of the world's most popular dating apps. But a few years later, she left Tinder and filed a lawsuit against the company alleging sexual harassment. The ensuing attention from the media – and cyberbullying from strangers – prompted her to launch Bumble, a dating app where women make the first move. Today, the Bumble app has been downloaded close to 30 million times. PLUS in our postscript "How You Built That," we check back with Michael Dixon, whose business Mobile Vinyl Recorders uses portable record lathes to cut vinyl at parties, weddings, and music festivals. (Original broadcast date: October 16, 2017)