TripAdvisor, one of the largest online travel sites, launched a “GreenLeaders” program that ranks 2,100 U.S. hotels based on their eco-friendliness, focusing on operations more than construction. Those 2100 hotels now have something that their competitors do not. No…not a heart, but a ranking. I don’t know about you, but when I managed hotels I never wanted my competition to have an advantage that I did not and this program is free. By Ray Burger. Read more.