A scalable system to provide a means for a brand manager, marketer, consultant, or researcher to identify, monitor, measure, and rank the propagation of a brand's digital imagery across the web, including the social web, the system configured to implement a novel process in which digital image files obtained from social networks that are perceptually similar (i.e., appear identical to the human visual system), but whose digital representation differs, are identified, data associated with the images files is clustered into groups, each group representing a common single piece of content that originated from the user, and enabling a user to access and organize the clusters of brand image data to measure and track the engagement of users on the social network with that brand image content, thereby providing measurable statistics for the user.