Patrick DalyJust a heads up that if a custom post type is not registered as public its added to the sitemap automatically without any way for them to be excluded. The settings page doesn't list the non-public post type.
The URLs included in the sitemap point to 404s since the post isn't public, but that might end up being a whole lot of 404s.
http://wordpress.org/extend/plugins/google-sitemap-generator/
