http://www.sitemaps.org/

http://www.xml-sitemaps.com/

http://probablyinteractive.com/2008/10/20/Ruby-Rails-and-Google%20Sitemaps.html

Ideally we'd use Wagn cards (of course) for any site-specific configuration.

Probably part of this is to add *description and *keyword cards, which can be used for meta tags in head.