Several years ago I built a website for a client and he actually ask me that question. Actually, the way he ask included a couple a profanities that I thought it best not to repeat. He knew what a backlink was, “that underlined blue phrase that links you to a website when you click it.”   What he didn’t know understand was the importance of that phrase. Now here we are 9 years later and I’m surprised that people still don’t understand.