Ruby on Rails and iOs developer and entrepreneur. Usually in The Netherlands, but I'm sometimes found in Hong Kong, Silicon Valley and other places.
Q&A for professional and enthusiast programmers
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
Q&A for Bitcoin crypto-currency enthusiasts
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for computer enthusiasts and power users