Ping submission is a great OFF-page SEO technique that allows users to get indexed their websites, blogs, and backlinks easily. In some cases, websites & its pages don’t appear anywhere in search engine this is because the site or the pages is not indexed properly.
Using ping submission this problem can be removed. Using ping submission sites you will be able to notify search engines like google, bing, yahoo that you have a page to index & you can also notify them about your backlink which gives you better ranking on that search engine.