Attendance drops 2 percent in opening month. Average announced attendance is 47,181. Four of the Big Ten's six-highest drawing schools are up this season: Michigan, Nebraska, Wisconsin and Michigan State. Ohio State is barely down, and Penn State is down 3 percent.
http://www.tarheelblog.com/2012/9/8/3302622/why-is-attendance-down-in-college-football
Since attendance is part of the home advantage here's a list f the 35 least feared stadiums including Akron, Kent St. Ohio U, 6 other MAC schools and Northwestern. ...stupid slide show.
http://bleacherreport.com/articles/1208811-power-ranking-the-35-least-feared-college-football-stadiums