I just noticed that the Yahoo! GeoPlanet API made an API change to its JSON API that breaks existing apps. (I noticed because it broke the sign-up process for the new Singularity teaser site.)

Googling around, I couldn't find any announcements from Yahoo! about this. I don't know if there's a notification feed somewhere that I'm missing -- if so, I'd appreciate it if someone could point me in the right direction. Otherwise, in case any other developres are using the Yahoo! GeoPlanet JSON API and are affected by this, here's a summary of the change from the post I just made on the yws-geo forum:

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