According to a blurb in the Puget Sound Business Journal, Zagat just came out with the results of its 2010 America’s Top Restaurants Survey. And apparently, of the 45 urban areas polled, Seattle scored at the bottom of the ranks when it came to the percentage of the check that Zagat contributors admitted giving as a tip.The bottom. Like, 45th out of 45. We supposedly tip an average of 18.4 percent, while diners in St. Louis and Philadelphia average 19.6 percent.Waiters and bartenders who’ve worked in multiple cities, is this true? Are we really that tightwadded? I suppose I’m revealing something unfortunate about myself when I also ask: Is 18.4 percent that stingy?