yeah i saw this too, i imagine it frees up virtual memory using the disk and not the actual ram which could work though i heard its not good for the disk long term it wears it out faster
I got this when it came out. but it did nothing. the option 'capability' in the settings never showed up. on the update, I did see the option in winterboard, but still, I see no results. I guess maybe I have something that is conflicting with it. I am running the vm plist mod, but I tried the speedboost before I installed the iphonevm2 mod and it wasn't working then either.