NEW YORK — A dealer-who-shall-not-be-named shot me an exasperated look when I tried to get her to open up about how the Metro Show was going. "This is a really boring show, I know."  This sort of frankness is a journalistic gold nugget, particularly during the first day of a small fair. Nevertheless, I think this dealer may have just been sitting on the wrong side of the room. The Metro Show, which emerged last year from the ashes of the American Folk Art Museum-run American Antiques Fair and runs at the Metropolitan Pavilion through the weekend, is an interesting mélange of Americana, antiques, folk art, outsider art, and contemporary work. It's a refreshing fair full of dealers who toil away in good years and bad, quite separate from the glitz and glamour of the Armory/Frieze/Art Basel parade of society events. This show, in other words, seems to be an art fair that is actually about art (and some crafts).