It sure beats instant coffee. A major change to Google's results page has created an intense interest in interfaces that provide immediate feedback. Google Instant, which updates search results as you type, inspired YouTube Instant, which many developers have emulated using a number of different APIs.
It hasn't been long since developers responded with fear that Yahoo's innovative search tools could go away. Now two of the smaller, but still well-loved, APIs have been given less than a month to live.