Consumer backlash

1. Virtual Goods vs Digital Goods (Virtual Economy Gamification Tips)
2. In-App Purchases vs In-Game Purchases (Virtual Economy Gamification Tips)
3. Premium Currency vs Free Currency (Virtual Economy Gamification Tips)
4. Virtual Resources vs Game Resources (Virtual Economy Gamification Tips)
5. Demand vs Supply (Virtual Economy Gamification Tips)
6. Virtual Store vs In-Game Store (Virtual Economy Gamification Tips)
7. Economic Impact vs Game Impact (Virtual Economy Gamification Tips)
8. Free-to-Play vs Pay-to-Play (Player-Centric Gamification Tips)
9. Game Economy vs Virtual Economy (Gamification Achievement Systems Tips)