Developer for etc. (UF College of Education); core contributor to the Elgg social network framework; co-creator and maintainer of Minify; blogger since 2001.
Am typically busy pouring work into open source projects.
Profiles: GitHub, Google Code, @mrclay_org
Stack Overflow
Q&A for professional and enthusiast programmers
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Astronomy
Q&A for astronomers and astrophysicists
Super User
Q&A for computer enthusiasts and power users
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Information Security
Q&A for information security professionals
Personal Finance & Money
Q&A for people who want to be financially literate
WordPress Development
Q&A for WordPress developers and administrators
Area 51
Q&A for proposing new sites in the Stack Exchange network
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Software Recommendations
Q&A for people seeking specific software recommendations
Drupal Answers
Q&A for Drupal developers and administrators
Server Fault
Q&A for system and network administrators
Skeptics
Q&A for scientific skepticism
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Politics
Q&A for people interested in governments, policies, and political processes
Home Improvement
Q&A for contractors and serious DIYers
Web Applications
Q&A for power users of web applications
Ask Different
Q&A for power users of Apple hardware and software
Physics
Q&A for active researchers, academics and students of physics
Arqade
Q&A for passionate videogamers on all platforms
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites