What is a focus group? According to Wikipedia:
A focus group is a form of qualitative research in which a group of people are asked about their perceptions, opinions, beliefs and attitudes towards a product, service, concept, advertisement, idea, or packaging. Questions are asked in an interactive group setting where participants are free to talk with other group members.
You are usually paid for your time if you are selected for a focus group but you should never pay to find out about focus groups. If there are companies in your area that conduct focus groups, get on their mailing list so you get updates when new opportunities are available.
Companies that conduct Focus Groups (St. Louis area)
Join these databases to get informed for surveys you may qualify for – these pay anywhere from $50-$150! (sometimes more – depending on what you qualify for)