How did you find this post? Did you click on a link from another website or did a search engine like Google serve the link? If you answered neither then most likely you knew the domain name of the website.
Generally most people follow links to different websites. If you have no links then expect no traffic and your website is simply wasting away. Links are like roads and highways to your content. So a good link will help drive traffic to your website. Imagine if you had a link on a website like cnn.com. If 2 million people a day visit that site and only 1% of those visitors clicked on your link then you would have 20,000 visitors on your website and a backlink has been created. Why? Well the original link on cnn.com is going back to your website and referencing your content which in turn creates the backlink.
