While there are fellowship programs out there that could pay for your trip, Borchers, Gabrielson, and I all self-funded our sabbaticals.

FORBES: Should You Take a Sabbatical? 3 Women Weigh In

The basic problem appears to be that while getting your apps from the Android Marketplace is safe enough there are enough odd places out there that you can get an app from.

FORBES: A Botnet On Google's Android Found In The Wild