Just a random bit of interesting info. If I were take the page views of each setting as a barometer of general interest for each setting, the following represents the most to least popular settings.
1) One Page Worlds (not really fair since it represents more than one setting, but it is interesting that One Page Worlds gets almost double the amount of traffic as #2).
2) Brave The Impossible
3) Full Contact Magic
4) Future Imperfect
5) Axe, Hammer, & Rune
6) Conquering the Wyrm
7) Call of the Wild
8) Exactly tied between Chumahassee County and We The People
9) NightWatch (not really fair since it is the newest setting).