Considered making an Africa pinglist, too, but most of the threads (and msm articles in general) about that region are merely about AIDS, starvation, and warfare. MadIvan is supposed to have Europe pinglist already. And Australia, while a continent, is also only one country--a nation with some 20 million people. Even with Australia/Oceania, it would be sort of small.
And Antarctica--you could guess why there isn't an Antarctica pinglist.