"Well, a good example can be found at the following section of this forum "Dien dan Sinh hoc VN> Ky tuc xa > Tai lieu". There is definitely some serious copyright problem going on here."
=> I know. But would the American authors take trouble to sue? It might take a long way and hard time to get paid.
What do you think about patents in Vietnam? The price for patent protection is expensive, even when we spend in USD.