The document discusses target markets and research available for identifying and profiling target markets. It defines a target market as a specific segment of the public that a message is aimed at. Both quantitative demographic data and qualitative psychographic insights can help precisely target campaigns. The document lists common sources of market research data like Arbitron, Nielsen, MRI, and Claritas/Prizm for segmentation. It provides examples of target market profiles like "A Day in the Life" narratives that describe a potential customer's daily routine to help determine strategies.