Clearly, Al Gore's habits should be ignored as the leader of the conservation movement. Being a public figure shouldn't cast any doubt on his message and people are trying to polute his agenda while he sends a do as I say not as I do message.

I'm sure if people took into consideration that he makes 20x more than anyone else and thus should have a right to pollute 20x more than anyone else or consume 20x more than anyone else they'd understand that this in no way negates his right to tell us all what to do to save his world.

Oh wait, that's stupid.

Yes you can, depending on what country you are in. Advertising laws are different across the globe. America is pretty good about freedom in advertising. Some foreigners would be very surprised to come to America and see a Big Mac in Subway's latest ad campaign.