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The Search Engine giant launched Sitemap service in beta last week. The service lets webmasters contribute to better crawl coverage by providing Google with specific information about their web pages, such as when a page was last modified or how frequently a page changes.

In additon, the service includes a software tool, called a Sitemap Generator, which can create sitemaps from URL lists, web-server directories, or from access logs.

Google has released the Sitemap Generator through SourceForge.net, an open-source development website.