Blink remains very much open source: the repository should be visible in a minute or three.

We're going to be even more transparent than we currently are, actually, about how things get added to the platform http://www.chromium.org/blink#new-features. I'm pretty excited about how that's going to play out with regard to sharing ideas and implementations.

Of course, I wasn't claiming otherwise, but over time porting code to WebKit from Blink will become more trouble than it's worth. They can still learn from it, but you can hardly deny that this move is going to cause WebKit some pain to fill in the tremendous amount of work you guys were doing (the part about this being the reason for the move was, of course, completely a joke.

The two engines will diverge, yes. I think it'll be better for both in the long run, as we simply have fundamentally different architectural approaches to some pretty core problems the engines are meant to solve. There will be short term adjustments on both sides as we get used to the new options that are now available.

I'm honestly quite hopeful, both about Blink, and about WebKit.