Microsoft Bing and Google provided free WiFi in airports during the 2009 holiday travel season.
Google provided free in-flight WiFi to promote its Chrome browser during the 2010 holiday travel season.
As we roll into 2011, seven airlines ( Virgin America, United Airlines, American Airlines, Delta, AirTran, US Airways and Alaska Airlines) are providing free WiFi with a small restriction. The only site you can access is Facebook!
In-air WiFi provider Gogo wants to get more than the 7 to 10% of current passengers using its paid service. Since Facebook is the most visited site of its past paying customers, Gogo is attempting to lure more people into its in-flight service with this month long promotion.