Annotations are specialized, explaining references that are now archaic, and concentrating on longer things like novels or entire bodies of work. Not recent an

Annotations are specialized, explaining references that are now archaic, and concentrating on longer things like novels or entire bodies of work. Not recent and not short: that's two strikes against anything going viral. Also, Genius is a for-profit company that will surely dump literary annotations if they aren't profitable, at which time all of the contributed work will disappear. I expect this contributes to the shallowness/plagiarism of the material: serious users may prefer something like http://hypothes.is/ http://hypothes.is/ or a Wikimedia project such as Wikisource, which will care more about preserving information even if it shuts down. (Or their own Word document...)