I see. I think it's a huge stretch :) That's like Go claiming they are self-hosting because some of their tools are written in Go.

On a related note, I have to say that I still don't understand the point of this project. Were you guys unhappy with pypy's performance or development?

I understand that in theory, the approach you guys are taking is incompatible with pypy's, but I can't help but wonder how thing would play out if you Dropbox put their weight behind PyPy. Maybe it could've been the start of every Python programmer's wet dream: Python 2.8.