Literate Mathematical notebooks with Sectional organization and textual discussion exchanged between Mathematica users are the best technical medium of communication there is - by several orders of magnitude - easily. This is because of their active and dynamic capabilities. They also have a higher integrity because misprints or errors that don't compute are less likely to get into a notebook.
Notebooks can be exchanged over the web. There is no need for the drudgework of converting a superior document to a much inferior document just to appease antiquated practices and technology.
CDF documents are not that wonderful either. The reader and the writer should be on an equal footing.
Some day it will come about!
