I heard two stories lately. One about an entrepreneur who got rich making a system that works like this: you call a phone number, then you get access to a website as long as you leave the line open. When you close it, access is cut off. You get charged because the number you call is a for-pay number. The second story is about Africa. You work in the city, your mom lives in a village and is poor. There’s someone selling minutes on a cellphone in the village. If you want to send your mom money ($5), you buy a phonecard, but don’t use the code. Instead you call the guy with the cellphone, give him the code and ask him to pay your mom. He pays your mom 4.90$. Micropayments over distance.

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