The Audit Bureau of Circulations FAS-FAX report released Monday morning reveals that circulation sank again this spring, with circ at major metros declining dramatically. Gains were slight. Since March 2005, circulation has been declining at a more rapid pace. This spring, the numbers were expected to be better because of easier comparisons. Yet for the six-month period ending March 2006 compared to the same period a year ago, circulation at newspapers in major cities across the country continued to drop. Most notable so far: the San Francisco Chronicle, which experienced a dramatic 15% decline in daily copies, to 398,246. Daily...