It is now possible to link any electronic device to the internet at reasonable cost. The circuit board below is a web server which is both able to insert live information into a web page and respond to actions (e.g. pressing button) by the viewer. It is just 170 x 95mm in size, consumes 0.3W power, and is running the Microchip TCP/IP stack. It shows how easily one can setup two way flow of data/commands to everyday electronic items. An example application would be "I am going home early, so I will log onto my house heating and turn it on for when I get in".
Click the image to log on to the board (will not be running most of the time).