I'm a web app developer and mainly work in .net mvc3 and up. I do all of my websites in RWD and sometimes with twitter bootstrap.
In my spare time I play with Obj-C in iOS.
Q&A for professional and enthusiast programmers
Q&A for computer enthusiasts and power users
Q&A for professional programmers interested in conceptual questions about software development
Q&A for peer programmer code reviews
Q&A for power users of Apple hardware and software
Q&A for WordPress developers and administrators