Edit This proposal has entered the commitment phase, if you're interested please take a look: http://area51.stackexchange.com/proposals/63276/worldbuilding?referrer=lXRV2pz-84DT8d_GnskAZQ2 /Edit
Figured as authors some of you may be interested in this proposal over on Area 51.
The current definition is:
Proposed Q&A site for creators (authors, game designers, artists, etc.) who are designing their own worlds, universes, continents, or the like, usually drawing heavily on real world science for accuracy and on how real societies come into existence.
Though we are discussing exactly what does and does not fit in.