Computational Science

For scientists doing science by heavy computations.

Academia

For academics and those enrolled in higher education.

Skeptics

For skeptics, rationalists, free thinkers, or anyone who questions woo and pseudoscience. Skeptics is aimed at *applied* skepticism -- researching specific areas of woo or pseudoscience. It is not for philosophical discussions about skepticism.

The Great Outdoors

For people who love outdoor activities, excursions, and outdoorsmanship.

Role-playing Games

For gamemasters and players of tabletop, paper-and-pencil role-playing games

Astronomy

For expert and amateur astronomers and astrophysicists