Google Webmaster Tool (GWT) is the best free SEO tool you can get for your blog. For any level of blogger, GWT will allow you to address the complete health of your site, and will help you to implement various optimization techniques for your blog. We have covered few of these in the past, but in case you are just getting started, here are some articles to bring you up to speed,: A few days back Google added a beautiful chart in their Webmaster Tool showing the site crawl errors rate and what causes those errors. This is indeed a very useful tool, and I am going to quickly show you what you can determine from these errors, and possible solutions to repair the site crawl error warnings using Google Webmaster Tool. Getting started with site crawl errors in GWT: Login to your GWT account, and under your site dashboard, click on Health > Crawl errors. This page will display a graph showing a list of errors and what caused those errors. Since my blog is not facing such crawling issues, I’m using the image from the official blog post. So the detection of various crawl errors will look something like this: DNS errors Server connectivity errors Robots.txt errors If you see the errors detected in your chart growing like those shown in image displayed above, remember that it is your responsibility to fix all of these errors in an effort to allow the bots to crawl your site effectively….