If you haven't noticed, we've just pushed out a newly redesigned website. Thanks (again!) to Abhilash Raj.
Not only has the style been modernized and cleaned up, but the content has undergone a review and update. You'll find links to both the documentation and source for Mailman 2.1 and 3, links to the wiki and donation page, and more detail on contacting "us".
The site itself is now built using Pelican, instead of the crufty and *very* old ht2html templating system.
If you notice any problems, you can submit bug reports here:
Enjoy! -Barry (on behalf of the Mailman Steering Committee)