About Market Research: "Wikipedia"
In the last few years most U.S. market research companies have developed online panels to recruit participants and gather information. With the power of the internet thousands of respondents can be contacted instantly rather than the weeks and months it used to take to conduct interviews through telecommunication and/or mail. By conducting research online, a research company can reach out to demographics they may not have had access to when using other methods.
Statistical surveys are used to collect quantitative information about items in a population. Surveys of human populations and institutions are common in political polling and government, health, social science and marketing research. A survey may focus on opinions or factual information depending on its purpose, and many surveys involve administering questions to individuals. When the questions are administered by a researcher, the survey is called a structured interview or a researcher-administered survey. When the questions are administered by the respondent, the survey is referred to as a questionnaire or a self-administered survey.
A paid or incentivized survey is a type of statistical survey where the participant is rewarded through an incentive program, generally entry into a sweepstakes program or a small cash reward, for completing one or more surveys.