Every day every account takes a half cent (0.005) to cover the operational costs
So uhh.. physical coins such as the Casascius coins are a no-go for this microcash thing eh?
Of course not. You just have to include the date of issue as well as the depreciation rate with the denomination, eg:
ONE MicroCash Dollar
minus 0.5 cents per day since 1 June 2012
This MicroCash Coin will be worthless on 18 December 2012
Spend it quickly!
