I just published another competition announcement in my blog – http://www.thinkmacro.org/?p=388.
This time it is a video competition ran by the ITU with a deadline on March 31. You can get your ideas heard and perhaps even to go to the upcoming World Telecommunication Policy Forum in April. Currently there seems to be very few submissions and little time left, so I think anyone who participates has good chances.
It could be great to hear if anyone chooses to participate.