I was working with Fedora 18 beta on a Toshiba laptop and came across yum Extender.
Installed and loved it.
Couldn't find it on my other Fedora 16 package manager on a different Toshiba laptop.
yum Extender documentation only shows support for Fedora 17 & 18.
Fedora 16
terminal
su root
yum install yumex
It did it's thing, and works great.
Thanks for the fantastic software.