This document provides an overview of effective social media uses and practices for businesses. It discusses how social media has fundamentally changed connectivity, with people now separated by about 3 degrees, moving from the information era to the networked era. While social media gives companies a wider audience, companies that self-endorse are often kicked out of the conversation. The document recommends that companies create a personable online persona and get others involved through interactions, guest blogging, and leveraging office events. General social media guidelines include using discretion, being engaged and informed, and focusing outward rather than inward. The main social media sites - Twitter, Facebook, LinkedIn, YouTube and blogs - are also overviewed.