Based on the number of times during the year people here complain about not being able to communicate with Google, I think their attempt is going to fall flat.
How? Google doesn't know what my values are.
And I have no doubt that a number of people took a look at the list of charities and decided, "Google certainly does not share my values."
As I wrote previously, if Google gives money to charity, good for them, regardless of the amount. I just don't see it as some grandiose kumbaya event.