Yeah, I saw that. I'm concerned about the client identifier in the message, though. It seems like it tags the transaction because the comma is always there. The devs should rethink that part of the service.
Also, how vulnerable is this to correlation analysis? It also seems like big bro could match the SMS messaging to the blockchain in terms of timing. It would be cool if the devs could randomly delay the transactions or something.
Either way, this is a lot better than verisend (actually verisms, technically), which is not useable from a security standpoint. This is at least useable for low frequency transactions (maybe 10 or so a day per StealthText user).