20. The method of claim 19 , wherein the generating the alert includes: finding a matching image, wherein the matching image includes a facial image that substantially matches at least one facial image in at least one of the first set or the second set of facial images; detecting at least one of the predetermined types of display events in a posted image, wherein the posted image includes a matching facial image that substantially matches the at least one facial image; notifying the user about the at least one of the predetermined types of display events; and receiving an input choice from the user.
20. The method of claim 19 , wherein the generating the alert includes: finding a matching image, wherein the matching image includes a facial image that substantially matches at least one facial image in at least one of the first set or the second set of facial images; detecting at least one of the predetermined types of display events in a posted image, wherein the posted image includes a matching facial image that substantially matches the at least one facial image; notifying the user about the at least one of the predetermined types of display events; and receiving an input choice from the user. 24. The method of claim 20 , wherein finding a matching image includes: detecting a facial image in the at least one image; determining the facial image to represent the subject name; and assigning a tag associating one or more of the subject name and the user to the at least one image.