facebook has become one of the important social networking site where creating backlink is very easy task and in this way we can create backlink fom facebook and https://www.w3schools.com/html/html_links.aspfacebook is created very efficiency
The mentioned hyperlink are showing 404 error. Can you please share the do-follow link with us, which provided by Facebook?
If you want to get do follow Backlinks of a website. follow seo off page activity are