We use publicly available embedded geotag information in Twitter updates to track the locations of user posts and make photographs to mark the location in the real world. Each of these photographs is taken on the site of the update and paired with the originating text. Our act of making a photograph anchors and memorializes the ephemeral online data in the real world and also probes the expectations of privacy surrounding social networks.
— Nate Larson & Marni Shindelman, Baltimore, Maryland & Athens, Georgia, USA