This document summarizes a study on social media service encounters between customers and banks on Facebook. The study analyzed over 800 Facebook posts from eight UK banks. It found that customers often used Facebook to complain about service failures from traditional channels or ask questions. However, banks were often ineffective in their Facebook responses, directing customers elsewhere, not responding, or personalizing responses. The ineffectiveness may stem from discrepancies between what customers expect from social media versus what banks want to offer, as well as differences in banks' social media policies and training. The study concludes that banks did not design their social media services around customer needs and wants.