As someone who sometimes ask non-trivial questions that other people sometimes find useful I don't think this is the complete answer: I, and I guess others, ca

As someone who sometimes ask non-trivial questions that other people sometimes find useful I don't think this is the complete answer: I, and I guess others, can easily hesitate a full day, doing search after search after search, before asking on SO. On the other hand SO makes it really simple to create new accounts and ask questions. If they really were concerned about answering the same questions again and again they would implement some basic rules like limiting new users from asking questions untilntyey had been active for a full day or something. Weirdly enough it seems people like to complain about the workload while at the same time refusing to do anything to reduce it. In fact it is almost as if they enjoy moderating noobs :-|