FactSet Research Systems shows that of 13,339 ratings of U.S. listed companies 96% were buy, hold or overweight. Only 4% were sell or underweight. Mike Mayo describes the difficulties he faced giving true ratings of banks that reflected loan and other problems- in over 2 decades as a bank analyst- in his book "Exile on Wall Street." A significant culture change is required, says Mayo, for the hundreds of analysts who do the ratings to perform their function of providing proper scrutiny of companies. The clout of banks in the American capitalism of today also works to the severe detriment of the economc system to perform the way it should. He says the U.S. should look to the Financial Services Authority in Britain for the kind of actions that are needed for the financial sector supervisory officials. He points out that the FSA fired many of its existing staff and looked for new talent, at the same time increasing the salaries and benefits so that regulatory supervisors were not looking for opportunities in the private sector....