U.S. circulation spill into Canada continues to decline

US magazine circulation spill into Canada is continuing a steady downward slide, according to a report from Magazines Canada. Only three US titles -- National Geographic (35th); Cosmopolitan (61st); and People (97th) -- now make the list of the top 100 magazines in Canada by circulation.Total US circulation, as measured by ABC, has declined by one-third whereas average circulation per US spill