Your service seems pretty useful in the context of e-books (which seems like your primary market based on your website) - I'm not sure why the medium article starts off with wikipedia as an example, seems like a weaker use case (just my opinion though, I may be wrong)
What happens when the content of the wikipedia article changes substantially - where will it lead to, or will it show a warning that the target content has changed?
What happens when the content of the wikipedia article changes substantially - where will it lead to, or will it show a warning that the target content has changed?
seems interesting though