[kristianc]

I'm not sure about the ethics of taking other people's content and putting it behind a paywall.

[pilif]

But it's Medium's content. You gave it away when you posted it here. In exchange, you got exposure[1]

[1]: https://theoatmeal.com/comics/exposure

[detaro]

As far as I know, Medium writers opt-in to this, in exchange for money if a paying user reads the article.