Go to the MAXC web page - the link to join the yahoo group is on the front page.

MAXC

It might take a couple days to get approved for membership.

Pretty much all discussion is on the yahoo list.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist