PA is only good news for people that actually care about their feedback. Transactions are purely based off trust, and a person there that's new with 0 feedback is just as sketchy. Yes they do offer a verification process and 'insurance' on some things, but like I said, nothing is scam proof.
If anyone played EQ and bought/sold/traded back when it was allowed on eBay, scammers were everywhere. Even people with a bunch of feedback were doing it because of the dollar amounts involved at the time (thousands per account).
PA might come in handy for something that isn't on here occasionally, but I'll still prefer Redguides.