Computer networks proved their organizing power during the recent uprisings in the Middle East [but] those same networks showed their weaknesses as well, such as when the Egyptian government walled off most of its citizens from the Internet in an attempt to silence protesters. That has led scholars and activists increasingly to consider the Internet's wiring as a disputed political frontier. One weekend each month, a small group of computer programmers gathers [in Washington DC] to build a homemade Internet-named Project Byzantium -- that could go online if part of the current global Internet becomes blocked by a repressive government. The leader of the effort ... says he fears that some day repressive measures could be put into place in the United States. He is not the only one with such apprehensions. Hundreds of like-minded high-tech activists and entrepreneurs in New York at an unusual conference called the Contact Summit. The summit's goal is not just to talk about the projects, but also to connect with potential financial backers, recruit programmers, and brainstorm approaches to building parallel Internets and social networks. The meeting is a sign of the growing momentum of what is called the "free-network movement," whose leaders are pushing to rewire online networks to make it harder for a government or corporation to exert what some worry is undue control or surveillance.