It's a utility that is used to create/mount a swap files (IE Virtual Memory).. It does speed up memory taxing things like Web Browsing and such.. especially for CC units as they only have 256MBs of memory.
Nice tool, I use it regulary on my pandora, even if it takes some steps to activate a swapfile. ^^ Patchnotes say, it now uses /media as default directory, very nice, this should speed up finding the file a little bit.
I just tried it and wish I had done so 2 weeks ago when I would have needed it
When dealing with large files in LibreOffice for example this is a must have. The handling of swap files can't be made any simpler than this. A must have if you want to do more serious stuff with your Pandora!