It's not so much dead as it's been automated. When you write a blog article (wordpres, medium and co), any link you point to will automatically get a notificat

It's not so much dead as it's been automated. When you write a blog article (wordpres, medium and co), any link you point to will automatically get a notification that it's been linked to by your new article. You can sometimes see list of comments each with a backlink at the end of a blog article, it's generated from that.