Given how unstable some real world currencies are, in game currencies are better suited to be money. (Would you rather get Zimbabwean dollars or WoW gold?)
Reynolds then mentions an odd conclusion (which I found amusing), what happens to the in game assets in a divorce in a common property state?
Would an EVE player have to sell off their ships and give half their ISK to their former partner? Do you have to liquidate half of your Second Life inventory? And how would this process deal with bind on pickup gear (Or no-transfer in SL)?