Is the spam Japanese or Chinese?

Idk, look the same to me.

Korean

Kryptonian. It's happening again. Freaking alien.

Pretty sure it's Korean. What the hell with spambots these days? That's a second site I visit that gets attacked by those assholes.

Easy way to differentiate between the languages is this. Korean has lot of "O" in them (안녕하세요), Chinese are really complex (你好), and Japanese are simplest of the three (こんにちは).