I about puked when I first heard this story the other day. I've been working at an airport a good 15 years now and I always told people I'd start an airline called Dairy Air with the planes painted with a cow print.
While I dont know if this airline is real or not,I have heard rumors of the major airlines toying with the same idea for the cost of your ticket. The more you weigh the more you pay. Its now not a volume issue its a weight issue.