Mainly it's time constraints. It's one thing for me to just read
feedback, but quite another to spend the time it takes to try to
choose feedback from the lot that best encapsulates the various points
of view. Even if I half-assed it and just picked completely random
comments to read & respond to, I just feel like all of this costs a
lot of time for us while falling outside the scope of what it's
important for us to accomplish. (Which already takes up a lot of our
time.)
I have to admit the decision was probably also influenced at least a
little bit by the fact that when I listen to other podcasts, I always
skip the feedback. When I just want to enjoy some stories (i.e., it's
not my job to monitor feedback), I don't care what everyone else
thinks of them. On the rare occasion I get curious, I just go read
the forum/blog since it gives you a more complete picture and more
involved discussion.
Of course it's a mistake to assume that everyone else will experience
podcasts the same way I do, but this probably biased the decision a
little!