The 
The City of Portland has released a free iPhone application that allows people to report problems with any of the city infrastructures. This means that if you’re walking down the street and notice a pot hole, graffiti, knocked over trees, street signs, etc… you can stop, take a photo, and report it right there.
Look forward to hearing how well this works out for the city. Would be interested in knowing if they’ll be opening up the data collected as well.