Yea, its a total scam site. As long as your real name is not "Peter G" and its a burner phone you got nothing to worry about.
There's a lot of debate on how they get the phone numbers. Some say they post fake ads and when you respond to them they get your phone number and then try and match it to social media for a picture.
http://www.eccie.net/showthread.php?t=1266186