On http://www.brunningonline.net/simon/blog/archives/001835.html,
the author licensed SysTrayIcon.py under a variant of the WTFPL:

> Any road up, help yourself. Consider SysTrayIcon.py to be under an
> "Aleister Crowley" style license - "Do what thou wilt shall be the
> only law".
> 
> Err, but don't sue me if it doesn't work. ;-)