Over time, users have figured out various tricks for getting the most out of stack overflow. Like writing screen scrapers, techniques and tools for using the rss feeds effectively, various browser add-ons, etc. Sometimes they share their ideas and code here. But you sort of have to get lucky to stumble on them, or spend a lot of time searching. And I'm sure there are people out there who have set things up for themselves and not felt motivated to document it on meta.stackoverflow.com.
So initially I was thinking that it would be great if there was a "cookbook" section within meta specifically for this. But I suppose people could just start using the tag "cookbook". But to help it take off, you would want the stackoverflow developers to officially sanction/recommend it. For example, mention it in the site faqs and encourage people to use it. In fact I'd bet that users would take it as a challenge to try to create popular "recipes".
An added benefit would be that features needed by stack overflow would tend to rise to the top.
If it's not clear what kinds of topics I'm talking about, look at the some of the questions (in meta) tagged with screen-scraping, rss, greasemonkey, browser-enhancement, statistics, hidden-features.