I doubt that the participants in this discussion who are getting
so huffy about the EFF position are ready to tolerate a
situation where unknown third parties can arbitrarily block
any email they send or receive, without informing them,
regardless of content.
Think about how that maps to the present situation.
I can certainly understand how end users or senders would feel
that way, and many ISP's need to start doing a much better job
of communicating their policies to their customers -- that's
certainly not restricted to e-mail. However, using the EFF's
hard-won and extremely critical influence to restrict an ISP's
ability to manage their own systems doesn't seem like a good
long-term solution to that problem.