#yam The Node Ahead: JavaScript leaps from browser into future • The Register

Voxer is a walkie-talkie for the modern age, an iPhone app that lets you instantly talk across the interwebs and listen at the same time and leave voice messages if no one is on the other end and simultaneously chat with multiple people and toggle between text and voice to your heart's content. It's a real-time internet app in the extreme, and that's why it's built with a development platform most of the world has never heard of.

Great metaphor for group comms