Large companies are interested in your opinion. A number of market research companies have launched a campaign of recruitment of new panelists to send surveys to your email. Need internet access and personal email. You will receive surveys via email and you will be compensated for their realization. Surveys are of wide variety of subjects and are always voluntary, if you don’t have time or not interested can leave them, even though logically you will not receive the incentive.
The number of surveys you can receive in your email is variable. There are several market research firms that have opened recruitment campaign. Each company is independent and they have no relationship with each other, so you can be part of more than one. Each time that you enroll in a company you will need to fill in your registration form. In questionnaires for registration must include their personal data, some are mandatory and others can leave you blank, (studies, work, if you have a car) in order to determine your profile sociodemographic and receive in your mail the surveys that they conform to your profile. All the companies have spent years running and are backed by recognized advertising agencies and market research studies which guarantee its validity and reliability. I personally have experience with all and never I have failed, so I can’t recommend them openly.
This is not an offer of employment in the strict sense, it is an offer of collaboration between companies of surveys and you. You will be compensated for their collaboration. Offer valid for all Spain.