Thanks Meter 258
Join Date: Dec 2011
Location: In front of my laptop :D
Native app2sd doesn't move all the app to the SD (and not all the apps can be moved). Using EXT partition all the apps can be moved totally, so the use of internal memory is minimal.
SWAP, yes, it's virtual ram. I don't recommend you its use, because the SD's life is dramatically reduced.
If you wish to test it, you need to make another partition (formatted as SWAP), either from the Recovery or using a pc program.