I didn't know about those. The thing about !bang options is that you have to know something more about the problem to know the appropriate place to look--And that's the whole point of a search engine. The search engine should determine if the best/most popular solution to my problem is on one of those !bang sites or if it's on koders.com.
We're automatically detecting categories on blekko.com now. If you type in a programming question, it should return a category called /programming or /javascript, or whatever the language is you're looking for.
