You may be wondering why we chose to use Google Maps instead of, say Yahoo! Maps. Not because of fanboyism, though we really do like a lot of Google’s stuff, Earth in particular. But Yahoo! Maps has been getting good press (as has AskCity, but they don’t seem to offer an API).
(vi) YOU SHALL NOT: use the Yahoo! Maps APIs with location information that is less than 6 hours old and derived from a GPS device or any other location sensing device;
Indeed, this alone was reason enough to not even consider Yahoo! Maps. What are they thinking – afraid that people will build stalker websites to track other people? A Homeland Security type measure? And there are more examples.