Haven't looked at this too closely yet, and have to run right now, but wanted to post it to Discussions - may be of interest.
The World Bank's first API offers 114 indicators from key data sources and 12,000 development photos (see all sources). We are releasing this API because we believe this information can be mapped, visualized and mashed up in an unlimited number of ways that will help develop a better understanding of trends and patterns around key development issues.