Quick 'n Dirty Messenger App
Someone can telnet to your badge and sent you a message on port 23
If someone connects it vibrates and displays the received message for 5 sec.
If app is running it displays a message on the screen with the IP address and port number asking people to connect to you.

todo;
* elegant code
* cool led stuff
* coop with sending raw data to the network port
* handle multiple connections