I think for smaller amounts taxes are a non issue and if you are making a substantial income through gains, there are many ways to protect yourself from extortion, like a foundation, or even better move out of oppressive countries like the U.S. or Canada and renounce your citizenship (if you are a US citizen). On the isl of man for example there are no taxes for anyone earning over 100,000 pounds per year. Luxembourg does not have a gains tax. The U.S. however is one of two countries that will hunt you down wherever you go on the plant if you dont report.