What concerns me is behavioral information obtained through games (particularly ones of the push-a-button, get point variety) could be used to target individuals with addictive personalities. Combining this with information from the social graph would even be more potent. The second a person turns 18, they will know all of the 'white whales' that should be brought in to play the slots. The ethics of psychological profiling will soon be a major ethical issue brought to us courtesy of big data; an issue that has implications well beyond gambling.
Anyone working on any gambling apps for Facebook or in general on web/mobile?