This removes the cookies and useless files that your hard drive collects while you surf the Web. Just use this once a day to keep that hard drive cleared out and make more space available. You can select which items you want to clear off your computer. This also provides a comprehensive summary of items that can safely be deleted, giving you control over the process. If you are running Mac OS 9 with multiple users, this will find all files for all of the users on that system and will show them as duplicates if they actually are.