I was recently wanting to ask a question along the lines of "What options do I have for recurring billing in my web application?"
Where would a question like this go?
This question would go into the bin as a shopping receipt across the network.
If you had a question about how to use (or not have horribly fall apart on you) of a particular feature of a host then that would be an acceptable and constructive form of the question. In that case it would fall under Web Applications if you were a consumer.