using "bulk"

["Sharon F." <amazon @ one . net>]

Since so many mailing list programs are blocking headers with "bulk" in them I wandered if there was a better way to send mailing lists.  I've read the FAQ and such and am still unclear as to the benefits of using, or not using, the following:

# precedence           [word] (bulk) <resend,digest>
	# Put a precedence header with value <value> into the outgoing
	# message.
precedence          =   bulk


What are the other options and what kinds of trouble do I leave myself open to if I use them?

Thanks!
Sharon