You'll be surprised to learn that Twitter can even give instructions to a robot!
The idea: users type specific commands on Twitter to the
@n900niko account, for example of a computer, which are sent to a hacked Nokia N900 which retransmits the instructions to the
LEGO Mindstorms robot.
Nokia can take photos which are automatically sent to Twitpic.
http://www.youtube.com/watch?v=N201N6u6ils
via