Survey companies may have branches around the world so using a point-system rather than dollar amounts to make it simpler for them to reward everyone who takes surveys for money equally for their time. For instance, if a survey-taker living in Canada earns $5 CAD for a survey and a resident in Europe fills out the same questionnaire, the survey company would want to reward them equally. It is easier for the survey company then to simply award each survey taker the same amount of points for completing the survey rather than dealing with fluctuating exchange rates and figuring out what amount should be awarded to each survey taker in their own local currency.
By rewarding members with universal points, survey companies keep the process fair. Collecting points with each completed survey also allows members to save up a larger amount of cash instead of cashing out smaller denominations each time. In this way the survey-takers choose when and how to receive their earnings.
