The exact same thing happens within China many years ago. China is decades ahead in information flow control. Websites like Weibo/QQ/Wechat will display a bann

The exact same thing happens within China many years ago. China is decades ahead in information flow control. Websites like Weibo/QQ/Wechat will display a banner text saying some tweets (or microblogging cards as you call it) contains a mis-information. Any mis-information with more than five hundred retweets will face criminal prosecution. The result? Authorities fight mis-information with half-baked and premature refutes. In practice refutes can be 100% arbitrary even fake. You can't refute a refute because they are final, non-debatable and in-reversible. Remember the refute mechanism is to stop the spread of "mis-information" so debate refutes are dangerous and would cause Streisand effect. The best part, the process is 100% manual, so PR firms totally lobbied website admins, officials in power, this corrupted industry is multi-million dollar business today. So who watches the watchmen? It's a twisted long path ahead.