I also use Foursquare as personal location journal. I like taking photos of special features and then adding it to the location to try and tell a story about my experience in the that location. I don't have it connected to my Twitter account or any other social accounts.
Here is a video about the origins of Super Better, It started as Jane Mcgonigal's personal approach to dealing with a concussion. It is more about inventing a game frame of the issues/challenges you are dealing with in life. It is interesting. I will report more after some time with it. http://youtu.be/ZztLac0Q1EI