Thought about it, but AFAIK all the really interesting work is happening in Sydney, and there's little chance of me leaving Boston, much less the country.

Also, I can't leave my current employer in good conscience at the moment: there's too much depending on my current project, and it would leave them in the lurch.

Finally, there's the simple fact that, while Google Wave is cool, I actually find the open-source infrastructure the more interesting project, with more potential to change the world in the long run. Google can cheat, with internal hacks and poorly-defined APIs, and simply throw processor power at problems; the open-source stuff has to be more open, honest and sensible...