Shake2Send is an application that allows two devices to pair and send contacts over the air. To pair, the two devices shake at the same time (Similar to Bump for the iPhone). No bluetooth needed!

Changes:

Better Auto connection
Bug fixes.
Better error messages
Some new artwork (not that different…)
Some internal code changes (Dynamic DNS, etc)
Better CAB File.

http://forum.xda-developers.com/showthread.php?t=609913