1. A computer-implemented method for propagating image metadata: receiving one or more seed images associated with a content category; conducting a content-based image retrieval via a computing device having a processor and a memory to identify one or more search result images stored in one or more databases comprising computer-readable media and communicatively coupled to the computing device; propagating image metadata associated with the one or more seed images to the one or more search result images; identifying a common characteristic between one or more of the search result images; identifying an additional image that shares the common characteristic, wherein the additional image is not one of the search result images; and propagating the image metadata associated with the one or more seed images to the additional image.