They are at it on Craigslist.  The guy sent me a message referring to a Craigslist secret code that was sent to my cell phone.  He said he needed that code number to verify that I was a legitimate seller online.  He was very harsh and demanded that I tell him my name, which I did not.  He said that as soon as he verified the code, that he would come over to purchase the item.  I did not give him the code, but I read that people do this to post fake ads and to sell information to spammers.  Please be careful!