Google has introduced a new feature in Google Webmaster tools that allows you to control the frequency of Googlebot’s visit to your website/blog. There are three options- slower, normal and faster (depending on how much bandwith the server can handle). Another new cool feature is Googlebot activity reports that shows you the number of pages Googlebot’s crawled from your site per day, the number of kilobytes of data Googlebot’s downloaded per day, and the average time it took Googlebot to download pages. Also access the Sitemaps tab to see the number of URLs submitted.

Google Webmaster Blog