From the USMLE Webpage:
"All participants must sign a confidentiality agreement whereby they agree not to discuss the cases or content of the PIPE in any setting, including e-mail or any Internet websites or listserves. Violation of this agreement will constitute irregular behavior with respect to the USMLE and will be aggressively investigated. Violators are subject to severe disciplinary action including being barred from future USMLE examinations."