If you have a website, sometimes you would want to block visitors coming from a country. For example you are running a promotion for certain countries and you don’t want visitors from other country to see it. Other than that, many years ago when I was in the e-book selling business, there are two countries (I am not going to reveal) which has very high chargeback cases, meaning they buy with their credit card and then inform their credit card company that they did not authorize the charge. The credit …