About Ribbit   Ribbit is working with the best and brightest technology and business leaders to build Silicon Valley's first phone company. Their mission is to "liberate voice from the device, and integrate it into the workflow of life, both business and personal." By providing a world-class telephone carrier infrastructure -- and the first open platform for Internet and voice developers -- they are helping to unleash innovation across the entire telephony marketplace, from the development of leading-edge consumer voice services to the integration of voice with the world's best business applications.