New Features in Sitemaps

• Googlebot Activity Reports - Charts that show youthe number of pages Googlebot’s crawled from your site per day, thenumber of kilobytes of data Googlebot’s downloaded per day, and theaverage time it took Googlebot to download pages.
• Crawl Rate Control - You can access this tool from the Diagnostic tab. If you’d like Googlebot to slow down the crawl of your site, simply choose the Slower option.
• Enhanced Image Search - You can now opt into enhanced image search for the images on your site, which enables tools such as Google Image Labeler to associate the images included in your site with labels that will improve indexing and search quality of those images.
• Number of URLS Submitted - Simply access the Sitemaps tab to see the number of URLs we found in each Sitemap you’ve submitted.

今天实在是忙,这就留给大家自行揣摩了...