I'm a Server Fault user mostly and spend a bit too much time on the site. I notice a lot of very badly written or barely-thought-out questions pop up from users with 1-karma or thereabouts that require editing before they stand a chance of getting an answer.
What could be done on the 'ask question' dialogue to try to help these people write better questions? Is that dialogue too subtle for them perhaps? Could there be an extra 'are you sure you've written this question well enough' screen before submitting? Or perhaps a few yes/no radio buttons they've got to check before submitting ("Have you included sufficient detail about your system including hardware/OS/apps, etc.?", "Have you re-read and/or spell-checked?", "Is there an actual question in your message", "Your normal-character-to-exclamation-mark ratio is too high", etc.)?
What else could be done?