When designing a marketing plan, defining your target user profiles is key. An audience can be comprised of unique and definable segments based on their online behavior.

One example of a tool for audience segmentation analysis is Forrester's Social Technographics data that classifies consumers into seven overlapping levels of social technology participation.
There are a number of tools for researching and defining audience and user segments for marketing plans. Numerous categories exist for these tools. Below is a list of tool categories that can be useful for web strategy analysis and user-profile research.