In a global world where ‘‘sustainability” has been used in so many and diverse fields, ‘‘it” must be defined according to the goals of our research and the theoretical model we try to implement in our study. To begin with, the paradigm of sustainability is not only known and used but actually imposed in most areas of knowledge. In fact, there are hundreds of proposals of any type for scientific forums everywhere [1]. The paradigm we decided to use is known as the Triple Bottom Line [2] and it works from three different points of view, id est: economic, environmental and social fields, which in fact is the accountability that any company, institution or organisation should render, as sustainability, nowadays.
Our research on sustainable tourism is based mainly on envi- ronment as per Chan and Wong [3], as an essential input for tourist industry, but paradoxically, this activity could also damage envi- ronment, unless we refer to social responsible tourists.
We had decided to begin our research with a practical sense. That means that even taking into account many of the theoretical approaches there are in the tourism literature, would give us some personal satisfaction and could be applied to some particular terri- tory for its improvement. That was the reason for our choice.