Putting Google Earth on the iPhone is brilliant!
For one thing, it's more useful than your Lonely Planet guidebook -- as the restaurant, bars, what-to-do and where-to-do information are constantly updated by Google Earth fanatics in real-time; not print-time (CNET's informative wonderful review) .
I wonder how would travel publishers respond? Would they put out their own Google maps where users pay for updates? Or would they simply fold up en-mass?
Putting Google Earth and Wikimapia.org together would be the icing on the cake
Ehhh... but why? Wikimapia is powered by Google which uses Google Earth technology. So it doesn't seem like there's any difference...