[saalweachter]

Hmmm, working the other way, if your goal is to process 100k transactions / second, with each transaction being 1/100th of a cent and your transaction fees being 1/100th of that, your budget for operating your network would be, what, $3M / year?

[Robotbeat]

True centi-cent microtransactions like that is going to need probably tens of millions (or even billions) of transactions per second.