Few things are worse than scouring a strange city in search of wi-fi. (Unless it's sitting in a Starbucks in that strange city ordering latte after latte in order to suck up the free wireless.) No longer. A service called Boingo gives business travelers access to more than 125,000 hot spots across the globe, including restaurants, cafés, hotels many Marriott and Sheraton locations among them and most American airports. No more paying per hour, and no more searching for Internet access. On the downside, no more using that old "off the grid" excuse.