iPowow wooed audience members at the Second Screen Summit at NAB earlier this year with a demo of its interactive second screen platform. iPowow offers a one-of-a-kind experience for users by enabling them to have a two-way interaction with the content on the TV screen. Gavin Douglas, chief creative officer at iPowow, calls the platform ‘participation TV,’ because it has taken what is referred to as ‘interactive TV’ one more step. The premise is that a viewer watching a show on TV can use a smartphone or other second screen device to register a vote that will then be pushed back to the television screen and reflected in a graphic. That two-way communication is truly interactive, Douglas said. ‘If you…