As if the high-yield market didn't have enough to worry about, without divine intervention adding to its problems. The market has come under indirect fire from the unlikeliest of sources: Pope John Paul II. In a recent address in St Peter's Square in Rome, the Pope joined supporters of the campaign in Italy against usury, the charging of extortionate interest rates on loans. He said it was 'a social plague' that trapped borrowers in a 'network of injustice' through 'pitiless exploitation'. Given that the Italian courts defined usury this month as any loan with a rate of over 9.45%, the high-yield market - where rates are high and getting higher - should take note: You have powerful enemies, and they are probably watching you …