The Steam development team give a kick to the other distros.
After I try to put steam on Fedora without results , the team replay:
Thank you for contacting Steam Support.
Steam for Linux is currently only supported on Ubuntu 12.04/12.10 with Unity, Gnome, or KDE desktops.
If you are running another distribution of Linux, we will not be able to provide support. We recommend you install Ubuntu for the best Steam experience on Linux.
For more information on this please visit the following link: https://wiki.ubuntu.com/Valve