In one embodiment, grouping, organization, or storage locations are defined for digital objects based on a user's familiarity with the geographic location where the digital objects were generated. For example, a mobile device generates the digital objects. The digital objects are received or collected at the mobile device or at a server. A first digital object is generated at a first time stamp and assigned a geographic location to the digital object according to a current location of the mobile device. Familiarity data is accessed according to the current geographic location, and a time period is set based on the familiarity data. The digital object is associated with at least one additional digital object generated within the time period to the first time stamp of the collected digital object. For example, photographs are grouped together in a digital photo album according to familiarity and collection times.