Javascript maniac, clean code junkie, fitness enthusiast. Ex- Prototype.js core developer, creator of Fabric.js, node-canvas maintainer, Printio.ru co-founder.
http://twitter.com/kangax
Stack Overflow
Q&A for professional and enthusiast programmers
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Bitcoin
Q&A for Bitcoin users, developers, and enthusiasts
Personal Finance & Money
Q&A for people who want to be financially literate
Mathematics
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Spanish Language
Q&A for linguists, teachers, students and Spanish language enthusiasts in general wanting to discuss the finer points of the language
Pets
Q&A for pet owners, caretakers, breeders, veterinarians, and trainers
Computer Science
Q&A for students, researchers and practitioners of computer science
Skeptics
Q&A for scientific skepticism
Seasoned Advice
Q&A for professional and amateur chefs
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Software Recommendations
Q&A for people seeking specific software recommendations
Physics
Q&A for active researchers, academics and students of physics
Web Applications
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Ask Different
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Software Engineering
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English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Code Review
Q&A for peer programmer code reviews
Super User
Q&A for computer enthusiasts and power users
Server Fault
Q&A for system and network administrators
Home Improvement
Q&A for contractors and serious DIYers
Information Security
Q&A for information security professionals