Adding a contact with sms an anonymous publisher

Adding a contact with sms an anonymous publisher

This might be useful for some type of site where publisher don't want to leave their credential , like maybe dating site 
So I created a system (using Twilio) that instead of contacting user (I work mostly on a non register user basis ) will send an sms to the owner of an ad 
_ You create an add with your phone number in an extra field 
- your phone is link to the number of the ad : 44143 
_ the buyer who wants to contact you click on the send sms that input the code in a form in a modal
- You receive an SMS but the buyer doens't get your information, so you are free to answer or not
From my experience , as soon as you say "register" you lose half of your customer so that is a nice way for people to contact each other without registering, after for the cost of the sms or usage , some biz models could be applied