While WeChat is accessible to users all over the world, it runs on a different app inside and outside China. People or organizations anywhere can register for Chinese official accounts (roughly analogous to public Facebook pages), where they’re screened for sensitive content and visible to anyone. Separate official accounts exist for people located outside of China. Data from overseas accounts are stored on overseas servers, and not subject to the same censorship policies. They’re also not accessible to WeChat users who have registered from within China.
Facebook could employ similar tactics, in effect creating a “Great Firewall” from within Facebook itself. Chinese users might still be able to friend individuals outside the country, but be restricted from seeing some of their posts or creating pages the whole world could see. Likewise, foreign companies that create public pages might have to create separate ones for Chinese users.
Praticamente, ci sarebbero due Facebook: quello che usano tutti gli altri, e quello accessibile in Cina.