Sirtaj,
> Baseball cards are an alternative currency based around cards on > baseball players. They can fluctuate wildly in value, since they have no > central bank controlling money supply and interest rates. There are > exchanges and everything, just like bitcoin. They are similar to Magic > the Gathering cards*, except less fun. I don't think it's clear that the lack of a central authority is responsible for the fluctuations in price. Other causes could be: o Uncertainty regarding card supply & deman o Disparities in information regarding buyers & sellers (effective topological differences open the door wide for arbitrage, demand elasticity testing, etc). o Fad-like variations in the appeal of the cards themselves and/or the trading activity. Aside: I never got into Magic the Gathering, but many of the cards did look a lot more interesting than baseball cards to me too! ;) Cheers, -Jon