A website garners attention from users through the quality of its graphics; layout design and Content. Graphics & Layout Design may attract eyeballs, but what ensures the stickiness of the customer is the Content.
Is the Content engaging enough for the customer to STAY & click around, read around, share with friends, register, etc.? So a simple rule for websites is 'attract' through 'design & graphics' - make them 'Stick' - STAY & keep coming back for more - with Content.
The Stickiness factor ensures sustained interest as well as higher shares & more significant clicks leading to the website going viral with a large number of visitors & users.