Link bait is content designed from conception to go viral. The goal is to produce something so awesome your friends will share it with their friends, your friends’ friends will share it with their friends and so on.
In theory, if you to crete the perfect viral link bait, people keep sharing and sharing until everyone on the Internet sees your creation.

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In the diagram above, you send your link bait to four people. Each of your friends share it with four people. Each of them shares with four more and so on. Four become Sixteen. Sixteen becomes sixty-four. Sixty-four becomes 1,024. In this perfect distribution, 1,108 people will see your content and it keeps growing.
Great link bait earns links. Those links increase domain authority. Higher domain authority generates better search engine rankings. Or at least that’s the SEO theory. But as we are about to discover, one cannot simply decide to publish link bait and have it work.
Just like SEO, making link bait work is difficult. If fact, you’ll quickly realize that link bait means different things to different websites.