The tool is Sensemaker. Snowden makes a compelling argument about how it allows participants to self-index their stories, which is important when, for example, the Australian government wants to study Aboriginal groups using ethnographic methods. White researchers invariably attach different meaning to the stories they collect than the Aborigines themselves would. Here’s a demo site for Sensemaker: http://kafka.sensemaker-suite.com/Collector/collector.gsp?projectID=cultureSCAN&language=en#Collector