Google Webmaster Tools has a great feature, Fetch As Google which allows webmasters to see the results of Googlebot trying to fetch their webpages. This tool returns useful information such as server headers and other HTML, which can help diagnose technical problems. It's was a great tool - but now Google has made it even greater! You can now see how Googlebot renders the webpage as well, rather than just fetching it.
Previously, you could use the Fetch as Googlebot feature to view an output of code and HTML. This served programmers well, but wasn't very helpful to those who're new to web programming, or those who are fairly new. Now, however, they can see a visual representation of what Googlebot sees.
The tool allow you to submit a url and crawl this is somehow good for blog starters cause it indexes the page within seconds of submitting unless u have problem with ur robot.txt.
To do this sign in to google webmaster tools navigate to crawl the click on fetch as google,
But my question for webmasters is - Is this feature good to rank my website at top searches or i should wait for google bots to crawl my site itself?