I think it'll work for other fields but not as well as programming.
Programming gets you a much higher volume of traffic. The same programmer, might come to your site 100 times during the week to find solutions to the different problems. Its also a field where you have a lot of amateurs and students looking for solutions.
The other fields you mention under specialty, are all the "oh shit my car broke down what could it be?" type. Its a one time problem, after which the person won't come back for 2 years. So you'll never see the same growth as SO, because you don't have any repeat users.
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I think it'll work for other fields but not as well as programming.
Programming gets you a much higher volume of traffic. The same programmer, might come to your site 100 times during the week to find solutions to the different problems. Its also a field where you have a lot of amateurs and students looking for solutions.
The other fields you mention under specialty, are all the "oh shit my car broke down what could it be?" type. Its a one time problem, after which the person won't come back for 2 years. So you'll never see the same growth as SO, because you don't have any repeat users.