Sticky

Pertaining to the capacity of a website to attract and retain new visitors. Habit-forming. Interesting. Appealing. The desired result of applying creative juices.

"Peanut butter and jelly. So tasty, so sweet and so sticky! Make your website like that and you are on your way to having a successful website."

The douchebag who said this probably also said Curb Appeal, Hydration Vessel, or morph (v.).