"Thousands of open source advocates and enthusiasts from around the world are expected to take the message of free and open source software to the streets on September 15 for the fourth annual Software Freedom Day.
"On Software Freedom Day, teams of enthusiasts hold local events to educate their local communities, supported by the parent organisation, Software Freedom International, and sponsors such as Canonical and the Free Software Foundation. It's an advocacy event whose the primary motive is outreach--promoting free and open source software to local communities..."