It is
ILLEGAL. Please Read this from the
US Postal Service.

Next they will say that since you are not using the USPS for your illegal activity, it doesn't fall under the postal codes but if you read your PayPal Terms Of Service:
"You agree that you will not use PayPal to accept payment for illegal products or services... You will not use the Service, the PayPal website or any of the services offered therein for any unlawful or fraudulent activity. If PayPal has reason to believe that you may be engaging in or have engaged in fraudulent, unlawful, or improper activity... your access to the Service may be suspended or terminated. You will cooperate fully with PayPal to investigate any suspected unlawful, fraudulent or improper activity, including but not limited to granting authorized PayPal representatives "guest" or "member" access to any password-protected portions of your website.
"You also agree not to use your PayPal account to sell securities, business opportunities, franchises, multi-level marketing, or goods with delivery delayed more than 20 days from the date of payment. You agree not to impersonate a PayPal User or a PayPal representative, or to request that a PayPal customer provide you with their password or other information to access their account." So,
PLEASE STOP THIS NONSENSE!!!!!!