As the notion of ecotourism gained popularity, Boo (1990) was one of the first to express reservations over ecotourism's potential. She warned that it should not be viewed as a harmless alternative to mass-tourism and pointed out its possible dangers. The research that followed was mostly critical of ecotourism and not focused on highlighting any success.
Honey (1999) provides a recent, objective and comprehensive look at the realities of ecotourism and its place in a broader development strategy. Measuring ecotourism is difficult because it is often lumped together with nature, wildlife and adventure tourism. "Much of what is marketed as ecotourism is simply mass tourism wrapped in a thin green veneer" (Honey 1999: 51) a concept referred to "ecotourism lite." Acott and La Trobe (1998) refer to the same phenomenon as "shallow ecotourism." They provide a conceptual framework for measuring whether an ecotourism venture is a sincere attempt at sustainability and conservation or if it is simply an exploited term. Ecotourists and their impacts are measured on a continuum ranging from shallow ecotourism to deep ecotourism. Shallow ecotourism differs little from conventional tourism except in its marketing, and deep ecotourism is that in which decisions are made from a biocentric, not anthropogenic, nature. Deep ecotourism views nature as having an intrinsic value. Ecotourism can