This document discusses how social media is impacting various areas of work, including employer branding and recruitment, communication and engagement, and innovation and learning. It notes that social media has led to a shift from hierarchies to more collaborative "wirearchies" in organizations. The document provides examples of how social media allows for peer recommendations, referrals marketplaces, knowledge networks, and more agile and adaptive working. It concludes by listing several authors on topics related to social media and organizations.