I don't see this working on CL since most people are aware and don't send PayPal for something on CL. Trust me because SWIM tried it before. Unless SWIM did something wrong in the process?
Might be because people read this:
-----------------copy/paste from cl-----------------
Deal locally, face-to-face —follow this one rule and avoid 99% of scam attempts.
Do not extend payment to anyone you have not met in person.
Beware offers involving shipping - deal with locals you can meet in person.
Never wire funds (e.g. Western Union) - anyone who asks you to is a scammer.
Don't accept cashier/certified checks or money orders - banks cash fakes, then hold you responsible.
Transactions are between users only, no third party provides a "guarantee".
Never give out financial info (bank account, social security, paypal account, etc).
Do not rent or purchase sight-unseen—that amazing "deal" may not exist.
Refuse background/credit checks until you have met landlord/employer in person.