Enter your blog url
Enter your blog name
Enter your blog updated url
Enter your blog RSS feed url
Enter your blog url
Enter your blog name
Enter your blog updated url
Enter your blog RSS feed url
This online tool is helpful because it is a way of pinging your site using a browser (i.e. via a website, such as this one). Sure, there are great pinging tools out there, but this is another option, especially if you are in a hurry.
Why ping your site? One reason is to let site crawlers (i.e. search engines) know that your site is there and more importantly, that there is content they may want to crawl. Ultimately, this is to let people (visitors) know about this new content on your site and gain traffic. Check out the same question asked on Quora.