I think this is a great idea. This really implements Howard Rheingold's Smart Mobs concept.
Think of this application like Google Groups, only with the ability to reach all participants anywhere, anytime using text messages. I wonder when a service like MySpace adopts this into their service.
Air2Web , the leading provider of mobile messaging and marketing applications, today announced its release of iTexter, a private-labeled group messaging application that enables wireless subscribers to create mobile groups and communicate instantly with the entire group at once across all major network carriers.
View the demo
iTexter is based on short code technology, making it easy for group members to send and reply to messages. Groups can be created directly from a wireless device or a PC, and group names are stored in mobile address books for quick reference. The application also features an opt-in-only membership that supports federal SPAM regulations