This document summarizes a presentation about social media realities. It defines social media as online communities for sharing interests and conversing. It outlines major social media platforms like Facebook, Twitter, and LinkedIn, why businesses use each one, and provides principles for effective social media use. Key points include using social media to create awareness, engage customers, target hiring and find investors. The presentation recommends allocating about 32 hours per month to each social media vehicle and balancing informing, entertaining, interacting and converting users to business.