Could there be such a thing as benefit fatigue? From 9/11 to Hurricane Katrina and the 2005 tsunami, charitable rock events appear to be popping up every year. And some believe the trend ultimately is taking away from the messages.
"It's kind of like, 'Oh, another one of these concerts where a lot of famous rock stars trot out for a cause,'" said Evan Serpick, an associate editor at Rolling Stone. "It's lost it's novelty, for sure."
In fact, some of the acts have been known to practice some very non-eco-friendly habits, including private jets, huge homes without energy-saving lights and appliances, and poor waste management.
However, one Live Earth performer isn't standing for that type of double standard. KT Tunstall said there is no room for those who can't practice what they preach. Turnstall told ABC News that she is not only a performer, but an environmentalist.
"I don't have a car," she said. "We're installing sheepskin wool to insulate our very small flat and using solar panels to save energy."
Live Earth performers come here not only to teach, but to learn as well. Event coordinators stressed the need for artists to use biodeisel buses as their main mode of transportation to the concerts and on the road.
"It's not that hard to use biodiesel fuel in your tour bus," Turnstall said. "Our modern culture is just obsessed with consuming all of the time."