A young website (launched in late 2007) that offers great features.
User Friendly: Easy to navigate and find information and cross information
Goes Social: One part of the website is dedicated to Social networks and bookmarks
Number of Destinations and Hotels: Drawback: website is relatively young (less than a year), so you do not have so much content, but will normally improve in the future
Community oriented: You can build your own profile, participate in forums, put pictures, comments, etc
Green Tips: They go outside the box of Ecotourism and gives a broad range of advice
To sum it up, the website will easy provide you a good eco-friendly destination and hotel, but it is not as its full potential yet.