[ I filed reports on some of these a few months ago....]
Crackdown on SMS spammers could boost use of SIM mules
Recent FTC litigation against SMS junk mailers may force scammers to change tactics, a security firm suggests.
http://www.pcworld.com/article/2030380/crackdown-on-sms-spammers-could-boost-use-of-sim-mules.html