TL;DR Watch a real-time stream of DOIs being cited (and “un-cited!” ) in Wikipedia articles across the world: https://live.eventdata.crossref.org/live.html Background For years we’ve known that the Wikipedia was a major referrer of Crossref DOIs and about a year ago we confirmed that, in fact, the Wikipedia is the 8th largest refer of Crossref DOIs. We know that people follow the DOIs, too.