I came to the conclusion that I should leave Facebook quite a while ago now. However, almost all of my friends have and constantly use Facebook, and it remains almost their sole method of contacting me. My friend group and I are all around 16, so that likely explains things.

I'm not sure. Aren't teenagers supposed to be the demographic most likely to change networks?

There is an element of inertia and of being held hostage though. Why go through the hassle of everyone changing networks of Facebook still works? And no-one can leave on their own...

But it is back now.

I've been using Facebook chat via bitlbee (which uses Jabber/XMPP) for several months. It was supposed to stop working on April 30th, but for some reason it does still work.

When someone compromises your system, you can't know everything that has been done. The only truly safe thing to do is reinstall everything from scratch, backing up configs of course.

Maybe China are trying a new approach to censorship. Instead of blocking things themselves, perhaps they're trying to get sysadmins to block all of China. I imagine it would save them a lot of work.

I imagine they're probably using a chroot jail.

Looks like it is running under Docker, as you can see by running things like:

       system("cat /proc/self/cgroup");

Looks nice, though you might want to name your other account something different. http://prntscr.com/4kkbo9

Haha a few people have noticed that so far. But I do it for all my apps and I don't mind that people notice it.