Sticky Sites

Interesting article I found today...

"A website's "stickiness" is a measure of how much time each user spends on it. The latest Nielsen Online data logs the average Google user as spending 1 hour and 50 minutes on Google sites. Microsoft sites come in at 2 hours and 12 minutes. Yahoo, with its very broad selection of topics -- and perennial favorite Yahoo! Games -- holds users for more than 3 hours.
But what category of website holds users' attention for much, much longer? In one case, more than 10.5 hours per user per month -- on average?
Online poker! Although their unique audience is significantly smaller than the big boys, PokerStars.com, FullTiltPoker and PartyPoker all average more than 4.5 hours of play per user per month -- with PokerStars.com logging an astounding 10 hours and 37 minutes.
As for social networking sites, Facebook only managed 1 hour 21 minutes per user -- I guess playing poker is more time consuming than poking."

Source: http://www.thestandard.com/news/2008/07/18/what-commercial-sites-are-stickiest-holding-users-attention-answer-shouldnt-surprise