Version 2.0 of Spring Cleaning sports a re-vamped user interface and the capability to move files to a storage area. This allows you to set aside things from your system folder into a folder called on the way to the trash and wait a few days before deleting the items, just in case they turned out to be something important to one of your favorite applications. There is also an application Un-installer that removes an application and any related items placed in your System Folder, an Alias Resolver that attempts to repair aliases that have become broken because you moved the original to another place or installed an upgrade and put it in a different place. Two handy features I use often are the Empty Folder Remover and Help Remover. I know well and never reference the help on.
Empty folders take up relatively little space, but it can add up.
There is also a Font Remover which searches for all of your fonts, arranges them by family in alphabetical order and allows you to remove the ones that you don't use. This is great for getting rid of the 36 ReadMe files and copies of Simple Text that inhabit your disk. Finally, there is a Prefs Cleaner. This makes it easier to go through your preferences folder and delete preferences files created by that 30-day trial software you decided not to buy or for those shareware games your kids loaded up and played once and threw away. The application is gone, but the preferences linger on in your System folder until you trash them, either manually or with the help of Spring Cleaning.