[Mailman-Announce] Updated web sites

I've finally regained access to all three websites, list.org, mailman.sf.net, and the GNU mirror, so I've pushed out the latest updates. There are the usual additions to the list of users, but much more importantly there's Terri's new user documentation, and my recent consolidation of the installation documentation. There's also a very incomplete list administrator's guide on the site (volunteers to help polish this up are welcome!).

Please poke around the site, read the documentation and let us know if you find any errors. Note that the GNU mirror always lags a bit behind the other two sites. http://www.list.org should be up-to-date.

Enjoy, -Barry