A little something to tide you over for now.
[QUOTE=Thomas77]
- Are there other worlds/continents?
- Which worlds/continents are the most popular and thus most campaigns tend to be set in?
- And where specifically are the most popular settings within that world/continent?
- For example: I've recently found a map of "Faerun" and am very curious as to which location is the most popular for campaigns; the Sword Coast? Thay? The Moonshai Isles? Halruaa? etc., etc., etc.,....
Any info on this would be greatly appreciated.

[/QUOTE]
1) There are places outside of Faerun such as Maztica (compare to pre-colonized South/Central America), Kara-Tur (pretty much the Orient of Faerun) and others that people can expand upon. *anticipates Rudar Dimple's reply*
2) Yes, Faerun is a continent, but the entire planet is known as Abeir-Toril (or generally Toril for short; someone correct me if I'm wrong).
3) Places like the Moonshae Isles, Halruaa are character regions within Faerun that numerous races and sub-races come from. Even the Underdark is divided into different regions, such as the Northdark (which is where Orogs, Drow of Menzoberranzan and Duergar of Gracklstugh are from). Which of any regions are the most popular, I cannot say.