Cryptocurrencies are not nessarily more volatile, but they are certainly slower. I don't think you need to make the same tradeoffs because less decentralizatio

Cryptocurrencies are not nessarily more volatile, but they are certainly slower. I don't think you need to make the same tradeoffs because less decentralization is needed for micropayments. I think GNU Taler is a good solution but it is competing against a monopolistic surveilance network that the banks profit from. I don't think the world/country can depend on a single company like PayPal. Once you get vendor lock-in, they will hike up the fees. GNU Taler would implement the same interface/API across different banks/vendors/wallets, so the individual switching cost (of going to another bank, for example) is low.