Good news for Wikipedia, though to be fair he did not donate (the source says he promised to), and it's not Facebook for Russia as such (a separate social network which copies Facebook functionality and features similar UI).
I'm all for donations from outside of the US, I'm also for voting to have fewer than 7 out of 10 of the Wikipedia board be from the US. I think this is important for the neutrality of Wikipedia, perceived and real.
Why don't we see more large donations to open projects from western startup CEOs?