Google Webmaster Tools
Google Webmaster Tools are very handy for webmasters, These tools gives you power to adjust many aspects of how Google sees your site, such as list the external and internal links to your site, adjusting the crawl rate at which Google bot indexes your site, checking the keywords users searched to land on your site, and the click through rate for each keyword, and see your site’s statistics.
It can be used together with Google Analytics, it works even better with Google Analytics. Google Webmaster Tools data can be accessed directly from Google Analytics, It’s very easy to integrate it with Google Webmaster Tools.
Once you verify your ownership and setup Google code on your site, logging into your Google Webmaster Tools account will take you to the Dashboard: There you can access all the major sections – Search Queries, Links to Your Site, Crawl Errors, Keywords, Sitemaps, Robots.txt and Other Advanced Stuff. Clicking on any of these will open the respective section.
So in order to keep any website more accessible and well optimized for Search Engines, One must understand how to use Google Webmaster Tools.