Members of the Membership Council don't have moderator powers on the site but they serve as a kind of advisory board to Sean and the moderators. If they see a problem that the moderators haven't noticed or something that could be improved, they can bring it to our attention in a few different ways (though these are things that anyone on the site could do as well). Importantly, they serve as a sounding board on the rare occasion when we have some particularly difficult membership issue that would be inappropriate to air in the public forums.