Upon the registration process he filled his personal profile, and among others, included his zip code area of residence and on the question “A pet?” … he checked: “Yes”.
Albert has signed up as a researcher. He would like to make a decision about opening a pet food store in his neighborhood. A store not too large… and therefore his survey budget is accordingly… not too big. Let’s say… 500$. He would be satisfied with 50 people answering his poll for that matter, so he chooses two parameters: within 20 km from his zip code area and also “pet owners”. His poll is simple and with one question… “Do you need a new pet food store nearby? “.
With the responses and feedback he gets he could instantly make a decision before he will make a major investment in setting up a business.
The survey reaches Dave, because he lives within 15 km from Albert’s zip code, and he owns a pet… a cat.
A simple calculation will show that for his participation in the survey will receive $10 (remember, 500 USD was the budget which was divided between 50 potential respondents)… and now everyone is satisfied!