Justin Tadlock always does a great job of covering new WordPress features, and this article is no exception. WordPress 3.0 has a new Menus feature that will make navigation design much easier for the average user as well as for theme designers.
This site is managed by Randa Clay who got tired of trying to keep track of all the cool solutions, ideas, scripts and bits of code that one day might be needed.
This is much better than searching around on Google and rummaging through my bookmarks for that thing I read a month ago. I hope you will find the site helpful as well.