Definitions for "stickiness"
Keywords:  visitor, encourage, spent, stay, spend
The degree to which the existing use of a product or service encourages its...
Anything about a website that encourages a visitor to stay longer before clicking away and also to return to the website in the future; a website is sticky if a visitor tends to stay for a long time and returns to it.
In the Web world, sticky is good. A sticky site is one that attracts and keeps users. To make a site stickier, its creators may add personalisation elements, online communities and discussion areas, user feedback, and extensive links.
Keywords:  glue, paste, quality
The quality of being sticky; as, the stickiness of glue or paste.
Keywords:  surface, property
the property of sticking to a surface