The idea of this plugin is coming from my work. I’ve been assigned a lot tasks for cleaning broken links. Which is so bored. Editors are lack of basic HTML skills, they always tried to insert links like such: href=”www.abc.com href=”awesome-slug Apprently, they will finally result in http://mydomain.com/current-page/www.abc.com http://mydomain.com/current-page/awesome-slug So this plugin is to display a warning message in WordPress dashboard, in case there is such invalid URLs in post content.