Apple iphone webapps are highly location aware

Location aware functions are starting to appear too on the iphone, that includes a GPS. A full overview can be seen on Apple webapps

It can also be highlighted that 'tourism' type of applications are hugely represented, where the location awareness element makes totally sense.
Yelp, Urbanspoon and iWant are usefull to find restaurant, localise cheap gasstations, or call a cab. The full list can be seen under Apple webapps/ travel, but here a small best of from me:


San Francisco Lowest Price Gas Finder 09/04/2008 Locate the lowest price gas in the San Francisco (California) area right from your iPhone
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WorldPics - The world in photos 08/25/2008 A free community website made to discover the world through geolocated photos.
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iconFind Quick use of icons to find points of interest around you.
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iSinGeo 06/26/2008 Location based web application for finding things near you in Singapore.
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IndyDining - Indianapolis restaurant reviews 05/27/2008 A community-driven website based on Indianapolis area restaurants. IndyDining offers ratings, reviews, menus, coupons, and more.
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MobileCierge 05/27/2008 A 24/7 Live Mobile Personal Assistant, offering Concierge, Travel, and Medical Assistance from one of the world’s largest assistance infrastructures.
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IndyDining - Indianapolis restaurant reviews 05/27/2008 A community-driven website based on Indianapolis area restaurants. IndyDining offers ratings, reviews, menus, coupons, and more.
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View web app

MobileCierge 05/27/2008 A 24/7 Live Mobile Personal Assistant, offering Concierge, Travel, and Medical Assistance from one of the world’s largest assistance infrastructures.
More
View web app