What is a Pingback?
A pingback is a notification when someone links to your website from an external site. WordPress can send you pingbacks when these links appear.
More About Pingbacks
WordPress enables you to receive pingback notifications when another website links to yours. The CMS can also “approve” pingbacks, which means the linking content will appear as a comment on that page or post.
Gaining backlinks is one of the primary ways to boost your website’s ranking in search engines. However, we recommend against linking back to other websites unless their content offers a real benefit for your visitors.