http://www.ultimaterollercoaster.com
2. CoasterBuzz
http://www.coasterbuzz.com
3. World of Coasters
http://www.rollercoaster.com
4. RideZone
http://www.ridezone.com
5. Roller Coaster World
http://www.rollercoasterworld.com
6. Roller Coaster DataBase
http://www.rcdb.com
7. American Coaster Enthusiasts
http://www.aceonline.org
8. Coaster Planet
http://www.coasterplanet.com
9. Coasterhost.com
http://www.coasterhost.com
10. CoasterQuest.com
http://www.coasterquest.com