QUOTE(Instantrac @ Oct 14 2014, 06:32 AM)
Fetch as Google is a diagnostic tool that allows you to simulate how Google crawls or renders a URL on your site.
Googlebot constantly crawls and renders URLs across the entire web. Fetching is an operation you run as a user when you use our Fetch as Google tool to retrieve a specific URL. It’s a small-scale simulation of the real deal.
The Fetch as Google tool has two modes of operation that you can use to test Google crawling and rendering for URL on your site:
* Fetch—quick check
When the Fetch as Google tool is in fetch mode, Googlebot crawls any URL that corresponds to the path that you requested. If Googlebot is able to successfully crawl your requested URL, you can review the response your site sent to Googlebot. This is a relatively quick, low-level operation that you can use to check or debug suspected network connectivity or security issues with your site.-
* Fetch and render—deeper view
And also you are making Google bot to revise and update your website through Google Fetch as