Facebook is a collaborative framework that contributes to what has been termed “heritage democracy”, by giving visibility to various regimes of engagement with heritage. The description and analysis of a Facebook group dedicated to the heritage of a French town, and its comparison with the citizen sciences’ frameworks, shows the limited nature of this democratic opening. First, discourses about heritage on Facebook do not challenge the official discourse about heritage. Moreover, the divide between experts and amateurs underpins its functioning. Secondly, unlike citizen sciences, the production of knowledge within these groups is not driven by a desire to accumulate knowledge, nor does it foster relations between professionals and amateurs. Finally, the Facebook groups promote a vision of the citizen as somebody who participates in and is competent, vigilant, attentive and possibly nostalgic of the commons built and presented within the group. The form of engagement in these groups can thus be likened to the “post-it” engagement described in contemporary civil society organizations.