Earth Hour and the corporations
I have noticed more and more private corporations are joining Earth Hour.
I was unable to find a list but I think this should be addressed as there is actually something we can do about this (unlike the many government institutions joining that we are forced to use either way).
If you are the client of some private corporation that support Earth Hour you should write to them and complain. Then look around for alternatives and try not to buy there product in the future.
It's as simple as that. They need to know that this is not the kind of social responsibility that we want them to take and that they can actually loose at least a few clients on it.