Most people have heard of the Great Wall of China, but China also has a modern-day virtual wall, frequently referred to as the Great Firewall of China and officially known as the Golden Shield Project. The Chinese government uses the Great Firewall to censor the Internet: Facebook, Twitter, and other sites are blocked. For tourists or expatriates in China, having no access to Facebook or Twitter can be vexing, since they may normally rely on those social networks to keep in touch with the happenings...
