Forensic evaluators are increasingly called upon to review online collateral information, including social media posts, web forum posts, chat histories, and other sources such as manifestos. This information is especially vital when assessing members of a virtual community such as that of the involuntary celibate, or incel community. While this new wealth of information can add valuable context to the forensic assessment, it presents unique challenges for the evaluator including challenges with authenticity and interpretation. This article will present an approach to evaluations of such collateral, including a review of the relevant empirical research in this area and touch upon important areas to consider in the forensic evaluation of incel online activity.