1. A computer-implemented notification system, comprising: a location-based notification component that generates a polygon-based virtual perimeter in association with a geographical point of interest and enables communication of notifications to a user device based on parameters related to user interaction with the point of interest; a change component that dynamically initiates modification of the virtual perimeter by the location-based notification component in response to changes to the parameters; and a processor that executes computer-executable instructions associated with at least one of the location-based notification component or the change component.