Hopefully, Google will speed up the addition of new cities. Through the new API implementation, new coverage will be automatically added to the RealBird listing websites, even if coverage is currently unavailable.
This is indeed a great, great feature for real estate. I bet, many new applications will pop-up now that the API is available. Check out the RealBird examples below to see how powerful this new neighborhood tool is when integrated into single property websites.
-- Zoltan Szendro