Online panels are used in market research as a tool to collect information from a group of people who have been recruited to participate in the research. Panelists typically provide their contact information and demographic information, and they may be asked to participate in surveys, interviews, or focus groups. Online panels can be used to gather data about customer satisfaction, product development, market trends, and more. While online panels are a great way to collect data, they do have some limitations. For example, online panels cannot be used to reach people who do not have access to the internet. In addition, online panelists may not be representative of the general population. Nonetheless, online panels are a valuable tool for market researchers especially in being able to conduct agile research projects.