It could be a focus group. A focus group company calls on behalf of another company (it's client) to ask you screening questions. If you qualify you go to an office and usually there are other people there and you have a round table discussion with a leader asking questions and getting you, the consumer's opinions. There is usually a 1 way mirror that the client can watch what is gong on. It can last 1-2 hours and they compensate you nicely for your time.