Wikimedia already has contextual popups which appear when a reader mouses over a linked article.
Here’s a screenshot of the popup that appears on the Los Angeles Lakers article when a reader mouses over the link to the Los Angeles Sparks Basketball team.
View live article: Los Angeles Lakers
Adding Contextual Popups for Quotations
CiteIt’s Contextual Citations could add a similar popup for quotations, although I’m not necessarily proposing that the popup appear automatically on mouseover.
Here’s an example of a quote from the Ruth Bader Ginsburg article that is taken from the New York Times. CiteIt adds a Contextual Popup that displays the context from that cited New York Times article:
Automating the Creation of Contextual Citations
Citeit provides a syntax for marking up the quotations’ links and a web service to automate the process of looking up the context and displaying it to the user.
You can view more about CiteIt for Wikipedia on in the new”Wikipedia” section of the site.