There are tons of websites, reporters and recruiters that make a living off college football and I bet their player rankings are 50/50 at best. In softball there are a limited number of people who have seen a limited number of teams, but they decided to start a ranking service because they found that parents of kids who are in their Top-100 are willing to pay monthly membership fees, so they can constantly check their DD's ranking....coaches of teams who are ranked in their Top-25 also tend to pay for membership.