KK, I'm preaching to the choir but: Having done many years worth of free-form interviews, structured interviews, focus groups, and written surveys... it is even harder to collect information when being secretive about ones true identity and intent. People interpret that as sly and deceptive whether that is the intent or not. Collecting data/information is nothing new. Claiming "experimental approaches" simply indicates a failure to research the proven ways of doing research.
As my wife always says, "you have to give a little to get a little; if you give more then that you'll get more." She is right 100% of the time.