China's We Chat "shadow-bans" messages with forbidden keywords, but only for China-based accounts

The University of Toronto's Citizen Lab (previously) continues its excellent work, this time with a deep investigative piece on a sneaky form of censorship in China's popular We Chat service, where messages posted to group chats that contain words on a government blacklist are made invisible to other participants in the chat, while the original poster still sees it, giving the illusion that everyone's read the controverial message but no one found it worth commenting upon. (more")