Here is a 1-paragraph summary of the text: Ringerous is a new Twilio-powered voice blogging app for Posterous, allowing users to create audio posts with their phone, utilizing Twilio's APIs and services. The service integrates voice posting into Posterous' existing functionality, making it easy to share updates, photos, and files via email or voice. Ringerous has been added to a collaborative Google Map of Twilio apps around the world, highlighting the growing number of innovative projects built with Twilio's platform.