Dying of phone

Kids who grew already up with computers, so called digital natives, are often not used to do phonecalls. The communication with friends ist often done by chat, and calling a stranger is a real event.
Now another app for the iphone again reduces the number of phonecalls.
Taxi-Caller is an iPhone app which uses GPS to search a taxi for you. Just run the app and press the "Call Taxi" button, the rest is done by the software.
The user doesn't need to know the number of the taxi company and doesn't know, how the street is called where he is right now.
And for the taxi-drivers it's a very efficient system, cause the nearest taxi is called, so the rides without passangers can dramatically be reduced.