Overman79 repository is empty. Are there any alternative repositories for bumblebee?

I find that the Overman79 repository, which is usually the default repository written in many bumblebee tutorials, is empty…

Are there any alternative repositories for bumblebee? What happened, and how to do…?

See here:
http://forums.opensuse.org/showthread.php/498144-13-1-and-bumblebee-not-found

I am not aware of any (current) tutorials on how to use the X11:Bumblebee repo yet.
There’s an old one here, not sure if that is still applicable though: http://forums.opensuse.org/showthread.php/469244-Bumblebee-(Optimus-support)-HowTo

Thank you very much… That helps me a lot…