https://www.pcgamer.com/valveconomics-why-we-gift/
Valveconomics: Why We Gift In Team Fortress 2 | PC Gamer
Jul 2, 2012 - It's not simply about being nice, or even generous, explains Valve economist Yanis Varoufakis in his latest blog post, the snappily named TO TRUCK, BARTER AND...
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