It's obviously innovative...well more evolution that revolution.
Something about it rubs me the wrong way however. It's kind of hard to verbalize. The whole concept seems some what opposite of where music is heading in terms of individually defined content delivery (think podcasting or satellite radio). I just don't see many people sitting around with their cell phones, sending text messages, while listening to the radio. It is also restricted to one radio station I would assume and I'd also assume that if you were to expand the service, you'd need to have individual texting numbers for each station. This just becomes cumbersome. A better interface I think, would be a button on a radio or a satellite radio reciever that automatically records the song details when pressed and logs them on the net for you.