Spam txt msg. Not the first time either. I have AT&T. You can forward spam sms messages to 7726 to report it. AT&T will reply asking for the sender's phone #. Not sure what they do with it from there but it makes me feel like I'm doing something to stop this crap.
Apparently a guy called Nick Brow from NY is behind this stuff. He owns over 100 web domains and hence one he has your number, you'll be receiving spam SMSs from many many sites. I have.