Have you folks learned nothing from previous examples?
Just a few weeks ago, the 'hacker community' was raising torches and pitchforks to defend a logo creator accused of "stealing his own work". We later learned he was likely guilty as charged: http://news.ycombinator.com/item?id=552160
Have any of you spoken with Zillow? Before picking up your e-torches and e-pitchforks and twittering yourselves into apoplexy again, you might want to pause and ask "why would a company who depends upon developers do something so obviously hostile to third-party developers?"
Something doesn't smell right here, and public airing blind conclusions in a "too smart to be wrong yet again" echo chamber doesn't help matters for either party.
Welcome to the internet. Have a nice stay.