Is Stack Overflow a central store for tutorials?
Posting your own tutorials and in that post link to the tutorial on your own website? I know we can 'answer our own question', but a more extended version of this would be a full-blown tutorial.
Next to the 'Ask a question' we could have a button 'Make tutorial' which disables the answer section and gives more focus to the comment section. Also the input field (WYSIWYG editor) could be a bit more modified (Headings for example!) for the author of the tutorial. I think that this is great. Why? Loads of questions are basically the same (especially CSS or jQuery related in my experience) and if some people put some effort in writing a to-the-point and crystal clear tutorial (I would try to be one of them) we could really save people some time.
It's just an idea though. I don't know in how far this can be applied.