How do low cost save?

A great explanation of how low cost airlines manage to keep their low costs. Apart from the well know using smaller airports and the seat pitch lenght, the number of employees makes the difference.

But I have to disagree with the fact that regular airlines have to pay comissions to travel agencies. That is not a reality anymore as most of them do not give us any comission at all. So do not ask me what they do with the money they used to pay us years ago.