That's one of the things that I don't like about twitter: Anything that otherwise might turn into a reasonable debate gets cut down to size, until it's basically a much less funny version of Monkey Island quip duels.<p>(I remember when "proper journalists" used to say that about blog posts. Now I wonder whether there'll be a time when we look back upon twitter as witty discourse…)
Actually, Joe Hewitt is rather publically no longer an iOS developer: <a href="http://techcrunch.com/2009/11/11/joe-hewitt-developer-of-facebooks-massively-popular-iphone-app-quits-the-project/" rel="nofollow">http://techcrunch.com/2009/11/11/joe-hewitt-developer-of-fac...</a>
It just doesn't fit Joe Hewitt's definition of open. Regardless I think it would be beneficial to google to at least work with Joe to get him to contribute to Android.