Just a heads up: That note doesn't work against unauthorized claims.
Trades will happen much quicker if you sign a message proving you own the BTC being sold and let them know if you are accepting escrow or not.
Considering you have to use an fake IP address to escalate an unauthorized claim, I hope the users here are not into fraud since this can get you some real big problems. If anyone attempts this, it sucks, but I definitely will call PayPal, provide proof (like for example, this thread) and much more to prove my legitimacy and report this to the ecops.