Thanks for the question. It is very complicated. There are many parameters to consider.
The language issue has been addressed in many answers already. But there are a lot more variables.
You want to advertise in countries where the people are bent on success. The hungrier you are the hard you work for your dinner. Some of the "richer" countries are complacent. They may buy in to their rank with cash, but they may not really duplicate except among others who can buy in. But hungry people figure out how to succeed even with limited funds. And if they duplicate that - watch out - there are a lot more people in the world with limited funds, than not.
Also, I think many of the countries that have not been on any lists here in the answers I have read are countries with talented people but who have no access to markets where they can make their services known and available. TripleClicks provide that market and it is a boon to those out there trying to make it.
You heard it said Buy Low Sell High. Well national economies are another issue. Where would it be better than in countries with low labor rates and selling to countries with very high labor rates. I sell a product for 3.89 in TripleClicks that I can buy here at 25 cents. That is a very acceptable profit margin. That is an advantage to those in countries so far, not listed.
The real answer to your question is, "Who are you and What are you prepared to do to help your affiliates succeed." That will help you know what countries are best.
My short answer is: All countries are best. Anyone ready to go can join my team.
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Thanks for the question. It is very complicated. There are many parameters to consider.
The language issue has been addressed in many answers already. But there are a lot more variables.
You want to advertise in countries where the people are bent on success. The hungrier you are the hard you work for your dinner. Some of the "richer" countries are complacent. They may buy in to their rank with cash, but they may not really duplicate except among others who can buy
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