For a long time I wondered how to save the Apps from one device, should HP's servers go down and well, thanks to your thread here, I forced myself to get into it...
And yippee... and it's also an answer to my other question that I stated in another thread... about Apps that I have bought, that aren't showing in my Pre3 catalog.
I was able to get Radiant defense, and Tower Wars from my Touchpad to my Pre3... Tower Wars was a pain because I ended up needing to tweak multiple index.html within the folders of the game, but eventually found how to get it to size accordingly to the screen.. I wish I could get it to zoom in and out... but at this point, that escapes me.
So the process isn't too bad, it's all about getting the app folder copied, repacking it into an IPK, and installing it via the quick install.
I still have many others to test this out with... but so far, it's fantastic to have made some headway.