I'm suspicous too. attempted to contact this girl via CL who asked me to sign to this web site
http://www.mytraci.com/
She says this is the only way for things to work and all that happens is you get her # and address when you enter the info and then get things moving.
It's to make sure I'm not a sexual predator or cop, so she'll feel safe! I even offered a personal neutral site meeting first to break the ice.
Didn't bite, seeing as SP is about discretion as well and putting your personal info there could be hanging yourself out to dry. The scary thing about that web site is that there is a recurring charge that puts the onus on you to cancel or you get dinged what 30 bucks a month and then try to explain that to a credit card company