Wordclouds of the Bible

Gene Veith posts an excellent link:

You must see Sixty-Six Clouds, which gives wordclouds (computerized breakdowns of word frequency with the most used words given in proportionally larger fonts) for each book of the Bible.

Here is the Psalms:

Here is Luke:

Here is Romans:

What I am wondering is how can one use wordclouds as a research tool? Not only scripture, I mean, but any text really. This is a form of discourse analysis, I suppose, and seems more useful than a good number of discourse analyses I have read up to this date.

(Via Cranach: The Blog of Veith.)

Mika