Google came out with a new service last week called Google Sitemap. It’s mostly a tool for webmasters. You can submit your sitemap to Google so their bot doesn’t have to crawl your pages as much. This way Google can know the entire structure of a website without having to crawl it.
What’s could be better than that? Well, a Google Sitemap generator plugin for WordPress of course. The best part of the plugin is the fact that it updates the sitemap xml file every time you change or publish a post. It also has the ability to generate a new sitemap xml file without editing or publishing a post. You can also specify a filename to save the sitemap xml file as. The official site for the plugin has a screenshot you can see. I saw this a day ago or so on Blogging Pro.