inputs: hypothesis: The US Congress may re-establish luxury taxes. premise: With online gaming in persistent worlds becoming more prevalent, a US congressional committee has begun to look into the tax implications of these booming online economies. Games such as World of Warcraft and Second Life have large player driven economic systems in which - either following the rules or against them - real world currencies are exchanged for in-game currencies. With the GDP of some of these economies rivaling that of some small countries, the US government is wondering if it is missing out on a potential source of tax revenue: or as some gamers might put it, the IRS is asking "You buy gold?"