Facebook post leads to drug bust:Douglas Martin + kidnapping post leads to drug bust Facebook post leads to Greenfield teenager's drug arrest. A Greenfield High School student was arrested for drug possession after making a Facebook post advertising a "reefer party." According to a criminal complaint, Justin Cervera discussed the party and a drug transaction online. Lindsey Guillermo isn't surprised. "They post everything about their lives on Facebook," she said. Greenfield High School's liason officer checked the 17-year old's Facebook page, as he often does with all students, and allegedly found the post. Someone wrote "I'll take a five" on Cervera's main page. Cervera replied "Bro, call me ASAP." The Greenfield Police Department said Cervera also had a video titled "Reefer Party for my Birthday." Later that day, that liason officer saw Cervera and a friend walking near 43rd St. and Morgan Ave. "So then he...