This document discusses how social media can be used for market research to support product management decisions. It outlines that social media is one form of market research among others like the internet, surveys, financial reports, and conferences. It recommends counting and analyzing posts on social media to understand trends in a market and what customers like or dislike about competing products. Customer reviews on specific attributes like design, price, and comfort can provide insights. LinkedIn and tools for analyzing companies can also provide information about competitors.