http://www.debian.org/ports/powerpc/inst/install
https://wiki.ubuntu.com/PowerPCFAQ
https://help.ubuntu.com/community/OldWorld
http://mac.linux.be/content/apple-powerpc-wiki
http://mac.linux.be/content/powerpc-installation-reports
http://penguinppc.org/mac/
https://wiki.ubuntu.com/PowerPCKnownIssues