Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Super User
Q&A for computer enthusiasts and power users
Mathematics
Q&A for people studying math at any level and professionals in related fields
Stack Overflow
Q&A for professional and enthusiast programmers
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Game Development
Q&A for professional and independent game developers
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
English Language Learners
Q&A for speakers of other languages learning English
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems