Just saw this, kind of long but pretty informative... Gives you a really good picture about what each team brings to the table in terms of TV sets, fans etc...
http://thequad.blogs.nytimes.com/2011/09/19/the-geography-of-college-football-fans-and-realignment-chaos/
http://thequad.blogs.nytimes.com/2011/09/19/the-geography-of-college-football-fans-and-realignment-chaos/