1. A system for contextualizing a digital flyer, comprising: a processing unit for executing instructions; and a memory unit storing instructions, which when executed configure the system to provide: a polygon mapping module, configured for generating tagged contextual information for the digital flyer: receiving source flyer image data of the digital flyer; defining two or more polygonal areas having a spatial position and inclusion relationship on the source flyer image data, wherein at least one of the two or more polygonal areas is a top-level polygonal area that is not wholly contained within another polygonal area and at least one of the two or more polygonal areas is wholly contained within the top-level polygonal area; and tagging each of the two or more polygonal areas with respective contextual information providing descriptors of a portion of the digital flyer associated with the respective polygonal area, wherein the tagged contextual information of the polygonal areas and the spatial position and inclusion relationship of the polygonal areas provides a hierarchical relationship of the descriptors of the digital flyer; and a flyer data store for storing the tagged two or more polygon areas in association with the source flyer image data of the digital flyer.