How to develop a new market both social and trade ?

Why not develop a social networking software, with which to exchange bitcoints or other virtual currencies. Either an interface for postcards, a portemonnaies and a server side it PostgreSQL database. All with a system of nano-taxation: as long as I trade on the system I do not pay any tax. When I change I am nano-taxed one for a billion for example. Advantage of the system the market is developing easily. Advantage for the state it can control and regulate or not the new market, probably world-wide ... Several exchange zones are possible: Zone dollars, eurozone, zones yuan, zone rubles etc. according to the price of the currency and the central bank's policy of the area. The advantage for the state: the tax and the information. The benefit for investors marketing. The advantage for the customer is the certification of the data at the same time as the means of payment. And a social network that allows you to have no bitcoints posing problems. https://en.wikipedia.org/wiki/Legality_of_bitcoin_by_country#France https://bitcoin.org/fr/telecharger https://bitcoin.org/en/developer-guide#consensus-rule-changes https://docs.openchain.org/en/latest/