Phone walkie-talkies

This is something that seems to be really taking off in the US, but that I haven’t seen over here in the UK yet. Push a button on your mobile phone and it connects you instantly to someone elses phone. I can imaging it encourages a different kind of conversation style, if the connection is as quick as it sounds. Nextel says that encourages shorter call times, for example.
Nextel Push to Talk

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