Google Webmaster Tools is really picking up steam — within a month there has been a couple great updates to the service. Yesterday Google announced four new features.
1. Googlebot activity reports: This feature gives you a good sense the load Googlebot is putting on your server. It displays a graphical representation of pages crawled per day, number of kilobytes downloaded per day, and time spent downloading a page.
2. Crawl rate control: If you find Googlebot is hitting your site too often or you wish it came around more, this new feature can solve your problem. There are three options to choose from: slower, normal and faster. The "faster" option is only available under some circumstances
3. Enhanced image search: This lets you opt-in to tools like Google Image Labeler which produces very relevant tags for your images without needing to describe them yourself.
4. Number of URLs submitted: And last, you can now see the number of URLs submitted through sitemaps