Research on jihadist online propaganda (henceforth JOP) tends to focus on the production, content and dissemination of jihadist online messages. Correspondingly, the target of JOP – that is, the audience – has thus far attracted little scholarly attention. This article seeks to redress this neglect by focusing on how audiences respond to jihadist online messaging. It presents the findings of an online pilot survey testing audience responses to clips from English-language ISIS videos. The survey was beset at every stage by ethical, legal and practical restrictions, and we discuss how these compromised our results and what this means for those attempting to do research in this highly sensitive area.