I've been programming since I was 15 and freelancing on enterprise projects for 7 years, doing most of my development on C#/.NET and Javascript.
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!
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