Why such a sudden adjustment to the NMC-to-BTC rate ?
After checking exchange rates to compare, would it be safe to assume that the pools exchange rate now includes convenience overhead ?
Presumably, yes. I've not been a user for all that long but for a while the exchange now rate was roughly 0.005 off from the "sell me now" market rate (or at least, bitparking.com). Then the market dropped down to around 0.020'ish. I'd been waiting for the rate here to drop, heh.