Not only that cc48510, but the Fast Food industry also uses all sort of marketing tricks to increase their marketing share with the end result of making you eat more. Just look at supersizing. That practice, in itself, is responsible for portion sizes increasing to monstreous porportions across the board, from the small corner restaurant to a glass of softdrink (big gulp), to how much the average homemaker puts on the plate she serves to her family. And don't even get me started on the marketing aimed at children. It's almost as bad as the Joe Cool line of commercials aimed at getting children to start smoking.

I'm willing to give the industry benefit of the doubt in that they weren't purposely trying to make people fat. That it was just the unintended result from trying to increase their sales. But unintended or not, that's what they did.