Stumble upon is a great little tool for finding information that is useful, but could otherwise have been missed.
Something I've stumbled on today is a tutorial on how to build jQuery plugins.
Granted, it's not something I've really needed until now, but it is something that could indeed become more useful soon, hopefully.
Anyway, the tutorials I've found can be read here, the beginners' guide at jQuery.com (http://docs.jquery.com/Plugins/Authoring) and a bit of a follow up by a developer of jQuery plugins (http://www.learningjquery.com/2007/10/a-plugin-development-pattern).
Always time to learn something new, I think.
