The pie charts showing which Hebrew words lie behind a given Greek word, and the inverse charts when one mouses over the Hebrew words, are extremely valuable. Is there any way to get the actual numbers that lie behind these charts? For example, running the word study guide on εξουσια shows that about half of its occurrences have no direct correspondence. By searching for εξουσια directly in the LXX, I can find that it appears 81 times, so half of those would be about 40, but it would seem very easy for you to make those counts available (and perhaps even give us a way to jump directly to a list of the passages that manifest a given translation).
I found the answer--just click on the segment of interest to get counts and instances. Very cool!