Today is Tartan Day. This is the day customarily used for the first time ever to celebrate Scots who have moved to North America. Torontoist recommends that you celebrate by eating a deep-fried Mars bar and staggering out of a soccer game, swearing loudly. Winnipeg MP argues for scrapping the penny. Sure, Pat Martin trots out all the usual arguments—it costs more to make than it's worth, it has no real value worth mentioning......