"What's interesting about Fedora stats when you dig into them is the fact that a number of the older releases, like Fedora 7 for example, which hit its end of life on June 13, 2008, was still being used on Jun 1, 2009 by 3.7 million installations (if I'm reading the data correctly -- and if I'm not, pls comment below).
"I know that for those that want a longer term Red Hat based Linux support there is CentOS on the free side and Red Hat Enterprise Linux and Oracle's Enterprise Linux on the paid side."