September 11, 2014 7:20 am Taking on Yelp Thumbtack CEO Marco Zappacosta looked for a business left to disrupt. Google leads a $100 million bet on him. US & World Videos 3:10 The never-ending election? 5:59 Eastside Cinco De Mayo Parade On Comunidad Del Valle 6:45 Downtown San José Cinco De Mayo parade and festival on Comunidad Del Valle 3:33 Text-to-games 4:36 AI chatbots get better at their job