The CL scam works like this. People are paid for every email address they capture for spam companies. How do you collect emails? Post an ad for something so irrisistable, or a vauge enough ad missing critical Information, In this case a direct contact number, and people will write to you. Viola, you will have a steady stream of email suckers.
You know your mail is getting thru if the email you sent hasn't been bounced back to you.