{jcomments on}I really needed a solution for those moments when communications demands should be meet with a quick exchange service. Imagine a conference hall. Imagine a party. And you need to exchange a file. But, the person you are chatting is half across the hall. What do you do?! 

Answer: connecting to Piratebox and chat and share the materials. Simple as that.

Thank you David Darts and Mattias - http://piratebox.aod-rpg.de/dokuwiki/doku.php/raspberry