if it was entirely a scam, surely it would have been all over the news by now
If its a total scam P2Fers can;t come up with against Lion none would get their money back for sure and its hard task for them to break Lion's norms...
I had a chance to talk with a P2F guy in phone, he said me about lic validation & stuffs but hardly answered about lion's work atmosphere In fact no one does willingly share his bumpy experiences I guess..