It’s Google I/O time again, the time of year when the Internet giant holds its annual developers' conference in San Francisco, showing off the cool stuff its army of engineers have been working on for the past 12 months. The event, which will take place on Thursday and Friday, draws thousands of attendees, all eager to hear from Google’s top brass — CEO Larry Page gave an impassioned and much-discussed talk about the state of the tech industry in 2013 — learn about the latest products, and get their hands on the free swag that Google typically doles out (last year, attendees got two free Android Wear smartwatches).