Devicescape's latest fourth quarter 2009 survey of WiFi usage indicates that the use of ad-supported free WiFi hotspots indicates an overall resistance to paying for WiFi. The majority of users, 67 percent, refuse to pay for WiFi, while a small percentages, 25 percent, are willing to pay up to $3 an hour for WiFi. Article [1]
Links:
[1] http://www.muniwireless.com/2010/02/10/survey-shows-most-people-willing-to-view-ads-for-free-wifi/