This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Bluetooth is hands down the easiest way for two Android devices to communicate directly with each other, without the need of a 3rd party. These are instructions on how to pair and transfer files between two Android tablets and phones using BlueTooth and ESFileExplorer.