Since it can not be repeated often enough:
Besides eBay, Paypal is the MOST unsafe way to exchange Bitcoin from and to Dollars or any other fiat currency.
This is because:
- Paypal forbids trading with cryptocurrencies per their Terms of Service. If you do so anyways your paypal account can be frozen and terminated. This mostly affects people that want to do this as a business like the mentioned btc2pp.net and many similar services. If Paypal takes a closer look they will freeze the accounts and thus such services will be unable to pay people that gave them their BTC.
- A person receiving BTC and giving away money has A LOT of time to make a chargeback for the money. A chargeback becomes even easier if said person is using a credit card for Paypal.
Use exchanges like MtGox and the like in order to exchange BTC for money. Or do it in person. And ALLWAYS use an escrow.