1. It actually became confusing after few forums that I went to made me to "vi" etc of the repo file but then I came across a good one at http://www.if-not-true-then-false.com/2010/install-chromium-on-fedora-using-yum/ that made my fed 18 machine experience Chrome
Login to root and command the prompt as follows :
[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# wget http://repos.fedorapeople.org/repos/spot/chromium/fedora-chromium-stable.repo
[root@localhost yum.repos.d]# yum install chromium
thats it....the Chrome is ready to run....