Toe down pedalling?

Just a question of what the problem with toe down pedalling is?

http://www.cyclingnews.com/photos/2005/vuelta05/index.php?id=vuelta0520/cycling-esp-protour-devo-28

People say that it decreases power output. I say, too-bad!! I pedal toe down on the right side only. Mainly out of nessesity and the other is becuase I’ve been doing it that way for 15 years. My right leg is 1" shorter then the left, so I really have no choice on the right side. I used to use a shim, but I ditched those about 3 years ago. I think even with the right leg being an inch shorter, my seat is still a tad too high on the left, too.

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