So I have this imac G5 model 8.7 running powerpc64.

I can't install any of the .debs they have on skype.com because they're the wrong architecture and I also tried adding the partner repo for the software center but when I do sudo apt-get install skype it says it can't find the package as if the repo I just added doesn't exist. I added the repo with the following command:

sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"

I'm running

Ubuntu Release 12.04 (precise) 32-bit
Kernel Linux
3.2.0-31-powerpc64-smp
GNOME 3.4.2