How did the contest work? Easy: Any town could enroll in the program and their inhabitants had to perform certain activities that would become "credits" for the city. The more actions registered people took, the more credits the city got.
There were four types of activities to earn the credits for
- Pledges: Commitments to reduce pollution.
- Get Best Answers Received awards in "Any other category" at Yahoo Questions.
- Get other Best Answers Received elsewhere.
- Mobile "Eco Term" Searches performed