When I setup a continuous location-updater I have to think about the actions of my future self. How can I guard against him? What if there are places or times that I do not want revealed (shopping for a birthday present, my home, etc.)? I take care of this by usually only sharing my neighborhood (it’s useful for both locals and non-locals without getting too specific).
However, in the future I’d like time-based rules (share specific places after 5PM), white lists (always share bars or when I am in San Francisco) and black-lists (never share my home). Services like Clarke and Fire Eagle and Latitude will need to add these safeguards before they get wide spread adoption.
Clarke and the Continuous Location Update - Brady Forrest, O’Reilly Radar