I would like to encourage you to pursue this a little further, since it smells like some sort of a scam and is most likely not an isolated incident. I am not aware of any way you could even link to PayPal or authorize a payment through this site. If you made a payment via PayPal, you should be able to look at your account and see to whom the payment was made, and there is a "Resolution Center" where you can dispute a transaction.
If there is a scammer at work, and he has found some way to target users of this site, I don't think we should just blow off the incident.