It isn’t uncommon these days to go into a restaurant or bar and encounter staffers talking on cell phones or texting madly. But before you get indignant, there could be a reason: It may be that the barkeep is just using a popular iPhone app to find out how to make that double-daiguiri stinger with that special pineapple infused rum and what to garnish it with, as detailed in this story from the Wall Street Journal.