How can the open spirit and free exchange of ideas be kept alive on the Internet? Can any organization combat Internet filtering and surveillance practices? The OpenNet Initiative works to do just that. The Initiative consists of a partnership between four academic institutions, including the University of Toronto and Harvard University. Their work is focused on exposing and analyzing practices such as Internet filtering, with the ultimate goal of helping "inform better public policy and advocacy work in this area." To get a good idea of who's filtering what, scroll down their homepage to the "Global Internet Filtering" section. Here visitors can view reports on countries' Internet filtering practices. Visitors can also read documents that include "China's Green Dam: The Implications of Government Control Encroaching on the Home PC". To get an overview of what exactly "filtering" means, users should definitely peruse the very well-written "About Filtering" piece.