The "freemium" business model has infected a wide swath of the gaming universe, from casual Facebook games, to shooters, MMOs and all manner of mobile offerings, and for good reason: These games hemorrhage cash money. That free-flowing river of skrill has to come from somewhere, though, and the mobile research group Flurry seems to have found an answer.

Drawing from a sample size of approximately 20 million users across 110 thousand Android and iOS apps, Flurry has determined that people aged 25 to 34 are responsible for 49 percent of the money spent on content in freemium titles. Interestingly, users between the ages of 18 to 24 played the most, contributing 32 percent of overall playtime, but they actually spent far less than their wizened elders. No specific dollar amounts were referenced, but we have a feeling they'd be fairly significant.