This document discusses how BT, a large UK telecommunications company, uses social media to make work processes more efficient. It describes BT's intranet which over 140,000 employees use for information, applications, and collaboration. The document outlines how BT embraces key principles of social media technology through internal tools like its wiki (BTpedia), blogs, podcasts, and social networks. It provides guidelines for using social media at BT, including governance, and discusses overcoming barriers to adoption. Examples are given of how social media supports knowledge sharing and collaboration across the large organization.