Any donations for the relief of people should not be filtered through a commercial company first. This is why we have organizations like the Red Cross. They post their spending publicly and you know that the majority of your donation will go to relief efforts.

I'm not implying that S-E is unethical, but they are run by shareholders who invested money to make money. There's always a chance that a portion of your donation won't go to the relief effort. Not to mention that the Red Cross has a lot more experience in helping people that S-E does. Meaning they can probably do more good with your donation that S-E ever could, simply because of that experience.