The document discusses the most popular social media platforms and provides tips for businesses to use Facebook and Twitter. It ranks the top social media platforms by number of accounts, with Facebook having over 1 billion users, and identifies rising platforms like Foursquare, Instagram, and Tumblr. The document then provides recommendations for businesses to engage customers on Facebook through posting daily with images, videos, questions and polls, and to use Twitter to share news, sports, business updates and join conversations by linking to specific URLs. It advises businesses on timing for social media posting and using scheduling tools.