Don't know what to make of this site, however it has been mentioned in a few newsgroups recently.
http://www.greaterwesterntrainrobbery.org.uk/
Anti FirstGroup website
i think FirstGroup provide a very good service, granted there have been problems recently which have been outside their control but overall i think it is fine, Frequent services,friendly staff clean trains, Many of the recent problems would of happened regardless of the operator of the franchise.
Jay