I post at SearchCommander.com now, and this post was published 18 years 5 months 9 days ago. This industry changes FAST, so blindly following the advice here *may not* be a good idea! If you're at all unsure, feel free to hit me up on Twitter and ask.
Google now has a blog devoted to nothing but their Sitemaps program.
One of the things I really like about Google has always been willingness to share information with webmasters about what it takes to get your site in shape.
Google recently began this sitemap blog last month in June, and it’s already become a regular stop on my list of “must read” blogs for SEO’s and webmasters.