|

Program Overview
Be a Better Planet is a promotion where Yahoo! is looking for the "greenest" city in America. Residents of each U.S. city can earn free compact fluorescent (CFL) light bulbs for themselves, and "green" credits for their city, by performing one of a number of different environmental-themed activities on Yahoo!. At the end of the promotion, Yahoo! will reward the "greenest city" with a fleet of hybrid taxis. The promotion is open to legal U.S. residents of the 50 states & D.C., 13 and older as of entry. All offers in connection with this promotion are open until 6/8/07 at 11:59 PM ET, or while supplies last. A total of 150,000 CFLs are available in this promotion. For "green" credits awarded in connection with Best Answers, provided that supplies have not already been exhausted, all Best Answers must be selected before 6/13/07 at 11:59 PM ET.
The "greenest" city is determined by the cities' participation in the program via Yahoo! Answers, Yahoo! oneSearch™ and Yahoo! Green, and according to the weighting method described below.
To earn "green" credits for your city, and free CFLs for yourself, you must first register for the promotion at http://better.yahoo.com/planet. Once registered, you can take action in any of the following ways:
Earn More CFL Bulbs For Yourself
You can earn up to 3 CFL bulbs for yourself just by completing the three activities above. Plus, for every 500 "green" credits you earn based on the above activities before the promotion ends or while supplies last, we will send you another free CFL in the mail within 3-4 weeks.
Each participant's activities will be tabulated on the "Greenest City Map" with all the other participants from their city to show how "green" their city is. The city with the highest "green" ranking, as determined by Yahoo!, will be awarded a fleet of hybrid taxis (up to 10). Should the chosen city be unable or unwilling to accept the taxis, the mayor of the chosen city may select an eco-friendly 501c3 organization to receive a $250,000 donation from Yahoo! to support eco-friendly programs in the city's region.
Calculation of "Greenest City" Ranking
By first registering for the promotion and then completing one of the designated activities, you are earning "green" credits for your city. The more actions you take, the more credits you earn, up to the limits shown. Throughout the day, we will add up the credits for your city - based on the 5-digit zip code you registered with - and will compare those to the population of your city to determine the greenness of your city.
| Activity | Credits | Limits per Yahoo! ID |
| Pledges Submitted | 100 each | Limit 1 pledge |
| Best Answers Received in Environment Category | 75 each | No limit |
| Best Answers Received in Any Other Category | 10 each | No limit |
| Mobile "Eco Term" Searches Completed | 10 each | Limit 5 mobile searches per day |
City Eligibility / Weighting
To help ensure fairness among big vs. smaller cities, the following weighting criteria will be used.
All cities with four or more registrants who have each completed at least one designated activity will be eligible to win. Total credits will be weighted against each city's population. City population is based on 2000 census data, as found in the "American FactFinder".
| Population | Weight |
| 2 million residents or more | 1.0 |
| 100,000 - 1,999,999 residents | 0.856196464 |
| 20,000 - 99,999 residents | 0.782958516 |
| 5,000 - 19,999 residents | 0.431191027 |
| 2,000 - 4,999 residents | 0.176672814 |
| Fewer than 2,000 residents | 0.053420396 |
In short, [(Total Credits/Population)*1,000]*Weighting = Your City's "Greenest City" Score
It may take a day or two for credits from the designated activities to appear on the "Greenest City" map and to affect your city's ranking. Please note that even if a particular city is listed as the "Greenest" as of the end of this promotion, the results shown on the map are unofficial and are subject to verification before a winner will be determined. The winning city will be announced on June 25, 2007.
Special Gift for Yahoo! Answers Users
All users who reach level 2 or higher on Yahoo! Answers who have also registered for the promotion will receive a Yahoo! Answers tote bag as a thank you gift just for participating. Please allow six to eight weeks for delivery of gift. You must be level 2 or higher as of June 13, 2007 to receive this gift. Level 1 users can still qualify for the gift by earning enough points to become level 2 before June 13, 2007. To learn more about how Yahoo! Answers awards points, please visit http://answers.yahoo.com/info/scoring_system.