UPDATE: The previous headline of this post was "Baltimore is CRAZY for not opening up its data and encouraging app development (cc: Mayor Rawlings-Blake)." But I've gotten word from the mayor's office this afternoon that, based on citizen feedback, the city IS indeed working on an open-data portal for city data. So take everything I say below as background on the topic. Hooray Baltimore!
What apps would you like to see for Baltimore?
Did you know that Washington DC has a contest called "Apps for Democracy," which awards prizes who use data from DC government to build useful Web, mobile and Facebook apps? The contest yielded dozens of apps and saved the city money.
The folks who run it are sharing how they did it with the world. Peter Corbett, founder of iStrategy Labs in D.C., which created the contest, said it's been adopted in about 20 places around the world.