With an Ethernet Shield, the Arduino can talk to other computers around it, and those around the world.
http://arduino.cc/en/Guide/ArduinoEthernetShield
http://www.hacktronics.com/Arduino/Arduino-Ethernet-Shield/flypage.tpl.html?pop=0
With an Ethernet Shield, the Arduino can talk to other computers around it, and those around the world.
http://arduino.cc/en/Guide/ArduinoEthernetShield
http://www.hacktronics.com/Arduino/Arduino-Ethernet-Shield/flypage.tpl.html?pop=0