I'm pushing out an update for my mini web-app in a couple of days, and I thought I'd throw in the latest version of phpFlickr to see if it would just work or if Dan was right and it'd break.
Of course, Dan was right, and everything broke.
So Dan, I (but surely more than just myself) am curious what kind of things we should expect to break; app developers, what are some things you've run into and how have you fixed them? -Chasen