Lately I've focussed on developing rich, fast, responsive web apps, using client-side frameworks (such as Knockout and jQuery Validation) and have been experimenting with NodeJS.
You'll notice I often ask and answer my own questions. To my surprise, many of those questions actually get visited and up-voted, proving that a lot of the stuff we think is unique to our particular project can actually be very useful to other people.
So go StackOverflow!
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for project managers
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Q&A for professional system and network administrators
Q&A for user experience researchers and experts
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Q&A for apps, scripts, and development with the Stack Exchange API
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Stack Exchange Network staging zone, where users come together to build new Q&A sites