There was a saying from a friend of mine in New York City that goes, “What is the best city in the world?” “New York City?”; “No, its generosity!” “What is the best nation in the world?” “The USA?”; “No, its donation!” Microtransaction is one of Bitcoin’s stellar feature. Before Bitcoin, there isn’t really a cheap easy-to-use way of sending small amount of money over the internet. Most existing services require you to at least connect a credit card, which can be an overkill for a microtransac...