I've always thought playing Cards Against Humanity online with faceless people sort of misses the point of Cards Against Humanity: it's all about getting people in a room together and laughing your asses off.
That's why Cards Against Originality, a browser-based web-app that allows you to play Cards Against Humanity online actually works. Hear me out here...
Cards Against Originality is a way of playing Cards Against Humanity using the internet -- but it's built in such a way that you need to play with people within earshot of one another. Essentially, it's an app that replaces cards with smartphones, tablets or laptops. Pretty cool. Clunky, but cool.
Basically it negates having to buy the card game in the first place.
Which sounds kind of sucky, considering it takes money out of the Cards Against Humanity team's pockets, but the game started life under a Creative Commons licence, meaning anyone could legally print out the game and play. Technically this is completely legal.
I still prefer playing with cards though.