Mind saying it more slowly for those of us in the back? Why does ecash as postage make for a more sustainable model.
Big fan by the way. I use Keychat daily.
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Thank you. Are you looking to explore why users choose paid services when "free services" are available?
In the offline world, most business models are pay-per-use. In a spontaneously ordered market, demand for goods and services spurs the emergence of supply.