Laptopfriendlycafes.com is a website dedicated to finding and listing free wifi locations that are also laptop user friendly.
Each individual cafe listing on the site comes with a 'Directions' link that leads to the cafe's location on Google Maps. The site also has a very handy iPhone app.
The iPhone app contains the listings for New York, London, Melbourne and Sydney. The app uses Google Maps to show the locations of laptop friendly locations in each city. The app can detect your current location to automatically find your nearest free wifi and laptop friendly cafe.