ca0eb3f4_e_Know___Shantanu_vs_The_World__Remarks
[Feature/Fix] Install apps on SD card [Real Effects seen by us] Not tested. [Remarks] 
This feature requires support from apps to integrate this and currently no apps support it. There is a command that you can run from adb shell "adb shell pm setInstallLocation 2" but it will cause "all" your apps to install to the card plus users report problems on missing apps as SD card is not available immediately at boot up.
Android Froyo And Nexus One: Everything We Know | Shantanu vs The World
Remarks