The Web has offered cultural heritage institutions and their public a medium rather than a product [8], changing their traditional task from information interpreters to that of in- formation providers [6]. As information providers, cultural heritage institutions therefore need to think about the way they provide meaningful access to and presentation of their collection. They furthermore need to think about how users may enrich their collection descriptions with their personal perspectives. The information flow from heritage institu- tions to the public thus needs to be supplemented with an information flow from the public to the heritage institution. This two-way information flow, where the producers and in- terpreters of Web applications meet, marks the Web as a place of dialogue [17].