Wall Street banks are the first to be blamed for the credit crunch. Central banks come a close second, but as the Federal Reserve's image is suffering, the European Central Bank looks as solid as a rock.

Many analysts and traders in the U.S. have cheered the Fed's rapid rate cuts and widening of collateral it accepts in exchange for liquidity for cash-strapped banks, saying that without them the crisis would be worse. The bailout of Bear Stearns also had its fans.