https://www.vice.com/en_us/article/7kxxjz/braiiiiiiiiins-alleged-harvard-human-remains-trafficker-left-paypal-notes

Most people who use social payment platforms know better than to put things like “so much drugs” or “sex last night” in the memo section of their transactions on apps like PayPal and Venmo, or else risk getting their accounts banned or worse. 

The people buying and selling body parts from a Harvard Medical School morgue learned that lesson when their payment app memos showed up in a federal indictment.