JaikuGrowl is an AppleScript that allows you to receive alerts from Growl whenever you or any of your Jaiku contacts emit a new "Jaiku".
The script works by reading your personal Jaiku RSS feed every five minutes and alerting you to any new Jaikus that have occured since the last time it checked.
XMLLib osax -- an AppleScript addition that allows for XML parsing (required to read and process the Jaiku RSS feed). Follow the installation instructions in the download package.
Your Jaiku screen and personal key (get your get from http://jaiku.com/api/key once you're signed in to Jaiku).
Growl set up and running on your machine.