I think you misunderstand where I was going with this.
I did not mean literally each day, at the lowest price. I just meant that with the profits, each day, buying some when they dipped down, and selling when they spiked, with any trading program, you could build up a nice supply of bitcoins in short time.
I´m sorry, but this whole thread is a bit pointless.
Either you assume that MtGox adheres to it´s policy of not being a counterparty(i.e. not participating in the market) or you assume that they are not honoring their word.
If you believe they decided to cheat/manipulate the market, following your strategy of buying low and selling high, would be a rather inefficient way of going about it. It would be far more easy and lucrative to simply run the whole exchange on a fractional reserve basis, especially given that they have full and unaudited control over entries in their database and a strong influence over how and when outgoing payments are executed.
So either MtGox is being true to it´s word(no buying for their own account), or they are cheating in which case following your ´Master Plan´ would be about the most inefficient way of going about it.
Thanks Gandlaf.