site

When you login on this page at www.i.o and then navigate to i.o, you are no longer logged in, and the other way around, so I suggest that a redirect is added, either to redirect www.i.o -> i.o or i.o -> www.i.o, in order to avoid confusions where you are suddenly logged out, if you are accessing the page from a link which uses a different hostname than where you logged in.

Personally I prefer to use illumos.org as the main hostname, and then redirect www.i.o to i.o, but that may just be me.