A new pingback on the post
It seems like you're referring to a blogging concept!
A pingback is a way for blogs to notify each other when they link to a specific post. When a blog links to another blog's post, the linking blog sends a "ping" (a small request) to the linked blog, which then adds a link to the linking blog's post in its comments section. This allows readers to easily navigate between related posts and creates a network of interconnected content.
In the context of your original post, a new pingback would mean that another blog has linked to your post, and your blog has received a notification about it. This can be a great way to discover new content, build relationships with other bloggers, and increase the visibility of your own posts.