I've gotten the same message twice. I'm pretty sure it's from the same number, but I deleted the first one figuring it wouldn't happen again. No clue how they got my cell, I practically never give that out and I don't think I have it anywhere online...
My number is different though, I received the message from 6366750943, and it says
"Hey Sean, not sure if you or anyone you now still smokes, But www.newtechcigs.com is giving away free e-cig trials. -Mike"
Now this may just be coincidence, but the other guy said his was signed Johnny and his brother is johnny, well my father's name is mike... How do they find these things?