Several of my posts deal with how people are using cameras and video to place their identities in time, and are then reconstructing their personal lives' time flow through computers. There are some interesting generational photos appearing on pinterest. Similarly, Dear Photograph (selections below) plays with familial photographic memories of the way places used to be, partly superimposed over new photos of the way the same places look now (Hat tip for both references: main post by JenX67). Dear Photograph is so popular that it is now a book.
Images Sources: Readers' submissions to Dear Photograph.