"Users of the 'voice SMS' service aren't trying to talk directly to the people they call. Instead they just want to send a message in the form of voice instead of text. The recipient's phone doesn't even ring for a voice SMS; the recipient is alerted with a beep and can retrieve the voice message by pressing the star key. The technology was developed in Bangalore, India, by Sunil Coushik and his partner, who dubbed the new voice-text service 'bubble talk.'"
also see: Smart Mobs: Voice-Text Service Next Killer Ap?
