- Simulation games: how to make realistic, educational games interesting without cheesing them up in order to make gameplay tolerable. For example Sim City, Rome Total War, Battlefield 3 and other FPSs, Farmville etc. If you're wasting your life playing a videogame, might as well learn something about the real world.
- Journalism and PR: how to provide objective journalism through new tools like data analysis, computer models, simulators etc. Use historical analysis to put events in context. Get rid of sources of drama, like writers and editors and focus on charts. Those can be read and debunked quicker, various opinions/biases could be compared more clearly. A report about a murder should be a chart that includes the murder rate in nation, city, area, show population growth, poverty etc. A report on political affairs would show money paid to politicians, estimate # of lobbyists involved, size of affected market, etc. Reduce talking heads and drama to minimum.
- Suburban Sprawl: popularize condos instead of individual homes to contain suburbia. Better mortgage rates for condos, advertise urban services, cost of living without car, etc.
- Family planning site: encourage a smaller population. Give coupons to small families. Many governments have such programs, you'd make them easier to use at least.
- Obesity: coupons, money saving for buying proper food instead of processed carbs and fast food.
- Internet addiction: psychoanalyze internet users through traffic stats etc. Figure out how to get them off, maybe through exercise program, nature getaway, new experiences.
Personally I'm suspicious of attempts to solve problems in the developing world that aren't part of some all around solution. Making it easier to grow food, access to water without a simultaneous plan to lower population size seems like a dangerous game. And a lot of charity programs are undermining local economies by handing out free food.