I've decided to try starting a website dedicated to various Ubuntu tips. The "beta" version is available at:
http://ubuntutips.kendeeter.com
This is meant to serve the same purpose as MacOSXHints, but for the Ubuntu community.
I realize there is a lot of good info on ubuntuforums.org already, but the information there is unstructured and sometimes difficult to peruse. This new site is intended to filter out the noise and provide a concise archive of various tricks that can benefit all Ubuntu users.
Update 5/24: Still no website yet. No luck with drupal, and geeklog and joomla were both disappointing. I might have to spend the weekend to build something from scratch.