http://sports.espn.go.com/ncaa/recruiting/football/news/story?id=4860278

A look at the 2006 Top 150 and how it went.  A surprising number of players were appropriately rated as great players.  On the other hand, a surprisingly high number of players did not even end up playing for their original program. 

I'd say the player ratings have SOME value.  Most of the top 25 panned out. 

But I also think it gets to me more and more of a crapshoot as you slide down from the top 25 players.

In other words, it is really easy to label Florida and USC a winner every year.  I don't think there is much value at all in determining whether a program is 30th or 52nd or 80th.