At Bloomberg's Business Week writers are now discouraged from using words like "but". What would the world be like without "but"? "I love you, dear," you might say. Then you would be unable to add, "But I'm marrying your sister."
CDOs remain shrouded in secrecy, their financial reports remain hidden from public view, unavailable to anyone except actual CDO investors. Bloomberg's coup was to pierce that veil of secrecy, and to drill down into the details of one CDO.