The Esri Squad Leader Android Sample Code by Esri demonstrates how API interaction can organize handheld military applications with ArcGIS. The SDK is available for download from Esri. Additional information is available at http://solutions.arcgis.com/defense/help/squad-leader/
As demand for Big Data applications continues to increase developers are being forced to confront some fundamental issues associated with traditional extract, transform and load (ETL). Simply put the ETL processes and technology they have in place was never designed to handle loading massive amounts of data into an application.
PubSubHubbub. Say that three times fast. If you're not familiar with PubSubHubbub, it's an extension of the RSS and Atom protocol that allows the feed to push content out when it's updated. That's just the sort of technology we should see from check-in APIs like Foursquare and Gowalla.