I think that you are asking for a form in a block where users can easily add a question without going to the usual node/add page. After some messing around, I've got this working on my site. I first created a custom content type called question and added a function to my template.php file.
* TOTAL_HTML - Congratulations, the total number of HTML files on this page (including the main HTML file) is 1 which most browsers can multithread. Minimizing HTTP requests is key for web site optimization.