Jim Rob,
I have always understood it that a host of a site (admin, mod, etc.) can tell where a poster is posting from.
I think it's called something like our "IP" address or something like that.
Wouldn't that be a way to find out if MD4Bush is a Washington Post or Baltimore Sun guy? Or some Dem worker?
Like this?
http://www.abika.com/help/IPaddressmap.htm