What does Sticky have to do with websites? - "Sticky" web sites are those you want to go back to again and again. Why are return visitors good? The more they visit your site, the more they rely on you, trust you, and have equity in your relationship. That means they'll come back and buy more goods, get more advice, and see more ads. What does that mean? Stickiness = relationships = loyalty = revenues.
10 ways to make your Website 'sticky'

From an article on the Microsoft Business Center website:

  1. Comfort your visitors with familiar items and navigation.
  2. Keep it simple.
  3. Offer a guided tour.
  4. Tell your story.
  5. Update your content as regularly as possible.
  6. Say yes to archiving pages.
  7. Test your labels and links.
  8. Always fine-tune your site after launching it.
  9. Establish trust in your users.
  10. Empower your visitors.

Read more at Microsoft Small Business Center