3Jam. Group text messaging. Send one message to the service and they send it on to all your friends. Works on any phone but you do need friends. Preferably more than one of. Er…business model?
3jam does not charge you anything to use the service. However, your carrier’s standard or other text messaging charges may apply, depending on your wireless plan. Each message you send or receive through 3jam is counted as one standard text message even though your message may be received by multiple recipients in the 3jam conversation.