Bitcoin is no joke. Baidu now supports the market. There are ATM dispensers of real cash in exchange for Bitcoins transferred from your cyber "wallet". What drives the seriousness of the mechanism is that an increased number of "believers" can "mint" new Bitcoins. Those with the will and ability to maintain the mechanism are said to "mine" new wealth and this is clearly addictive to certain kinds of people. It is an interest that pays.
Over the past week or so, a person could earn about 0.0001 Bitcoins (maybe 1 yuan at the current exchange rate) in one hour of expert "mining". But given that addicts spend their waking hours at this and that speculation is driving value up, it beats unemployment.