"Stack Overflow ultimately has much more in common with Wikipedia than a discussion forum. By this I mean questions and answers on Stack Overflow are not primarily judged by their usefulness to a specific individual, but by how many other programmers that question or answer can potentially help over time."
Personally I would have been much more understanding of the process of using stackoverflow if I knew this, and so would many of the people who get stung expecting an answer to their question.
In reality the user is contributing their question to the community, not asking a question in the traditional sense. That's my take anyway.