Okay so it makes sense to have a serving size when you report nutritional information. Like if there is a bag of twelve hotdog buns, the serving size would be one (1/12). A dinner for two, would have two servings. Because, um, it's logically the amount you would serve each person. But as for why a box of 7 bacon slices would be 5 servings... well, I just give up. Is 1.4 the natural serving size for bacon rashers and no one ever got around to telling me?