Not long ago, the term “eco-tourist” may have conjured images of backpackers in Birkenstocks trekking to remote destinations in numbers too minuscule to be considered mainstream. Well, that was then — this is a whole new now. Now, as in The International Year of Sustainable Tourism. Now, in the era where major recommendation resources like TripAdvisor single out Green Leaders for special attention. Now, when nearly two-thirds of travelers factor in environmental considerations when choosing hotels, transportation and meals.