Control an LED on the internet - LIVE VIDEO FEED INCULDED

Go here to view a live video feed of an LED being controlled by my Raspberry Pi, with the option of controlling the LED

(Update 16-16-2012 LED demo stopped worked as SD card wiped itself, I'm currently working on re installing and updating)

http://aforalex.no-ip.biz/led/led_control_external.php

It works by:

1. Simple PHP page that creates or deletes a file
2. Python script running continuously looking for this file
3. When it finds the file it switches the LED on, and when it doesn't it switches it off

The Webcam is currently being driving by a windows PC close by and hosted through a service called ustream. Ultimately I would like to have the webcam feed going through the PI also and control something a little bit more interesting :-) But for now its a nice proof of concept.

References: 

• http://www.themagpi.com/ (issue 2) for the python code to control the GPIOs
• http://www.instructables.com/id/Control-Stuff-with-your-Raspberry-Pi-GPIO-over-t/ - instructions on how to create something to control your Pi over the internet. I used a very similar method except used Python instead of shell