It is absolutely fair and necessary to be critical of Zuckerbergs Philanthropy

highlighted: " The most valuable path may well be to simply invest this enormous pool of resources in the people and institutions that are already doing this work " this is exactly he conclusion that Warren Buffet arrived at some time ago, instead of creating a big ego non-profit institution to give to the specialists, he chose Gates' organization. [source: The Snowball]

One way to look at this is that Zuckerberg just robbed the treasury of $45B. Part of that would have come in through capital gains taxes and the rest through the estate tax.

What they do with that money is up to them, not the state. It's a pretty sweeping end run around the taxation system.

Maybe we'll get lucky and he'll use the money to good end like Gates is doing. And maybe not.

This is a heck of a tax code we've got, it's trickle down on a grand scale.