This document discusses which social media channels are best for different types of businesses. It notes that Facebook is good for service-based businesses like salons or restaurants to interact with mostly female audiences, while LinkedIn, YouTube, and Facebook work well for technical or expensive products aimed at possibly male audiences. Customer service is important across channels, with Facebook and Twitter being top locations for customer queries and complaints. The key is understanding target audiences and using social media to efficiently drive people to a business's main website and blog.