The few girls I've spoken with have been easy to track down through Instagram or FB. They online models and sell themselves. Several have lived in Russia, although they claim to be Ukrainian. Another (maybe two) had pics with her boyfriend, on a trip they took the week before.
I won't say total scam. However, very chancey, and full of scammers. I spent about 5 letters into one girl. We will see if I get my credits back.