Плъгина се казва "Google XML Sitemaps"  и е за генериране на Google  Sitemap, респективно подходящ за GWT.

Автор: Arne Brachhold
Описание: This plugin will create a Google sitemaps compliant XML-Sitemap of your WordPress blog. It supports all of the WordPress generated pages as well as custom ones. Everytime you edit or create a post, your sitemap is updated and all major search engines that support the sitemap protocol, like ASK.com, Google, MSN Search and YAHOO, are notified about the update.

Ето го и реалния sitemap.xml на mpetrov.net: sitemap.xml