I think cancelling 3rd world debt to rich western countries is far more than what Bono is worth. He may well contribute his own money, but chooses not to release details of this.
Bono takes some unwarrented stick on this issue. He pays all his personel taxes, it turns out cheaper for U2 the buisness to be run in Holland. Does anyone here want to pay less taxes if it's leagal ? He tries to work for good causes when he doesn't need to being a rich rock star. He could be...