here's what i just read :
1.3 Privacy of Others; Marketing. If you receive Information about another User through the PayPal Services, you must keep the Information confidential and only use it in connection with the PayPal Services. You may not disclose or distribute a User's Information to a third party or use the Information for marketing purposes unless you receive the User's express consent to do so.
You may not send unsolicited email to a User or use the PayPal Services to collect payments for sending, or assisting in sending, unsolicited email to third parties.
1.4 Intellectual Property. "PayPal.com", "PayPal", and all logos related to the PayPal Services are either trademarks or registered trademarks of PayPal or PayPal's licensors. You may not copy, imitate or use them without PayPal's prior written consent. In addition, all page headers, custom graphics, button icons, and scripts are service marks, trademarks, and/or trade dress of PayPal. You may not copy, imitate, or use them without our prior written consent. You may use HTML logos provided by PayPal through our Merchant services, auction tools features or affiliate programs without prior written consent for the purpose of directing web traffic to the PayPal Services. You may not alter, modify or change these HTML logos in any way, use them in a manner that is disparaging to PayPal or the PayPal Services or display them in any manner that implies PayPal's sponsorship or endorsement. All right, title and interest in and to the PayPal website, any content thereon, the PayPal Services, the technology related to the PayPal Services, and any and all technology and any content created or derived from any of the foregoing is the exclusive property of PayPal and its licensors.