From the developer: "Protect your privacy while surfing the Internet. Recover hard drive space. Easily clean up the history of your activities on the PC and the Internet. Remove useless files that accumulate from un-installations. You can schedule this application to run at regular intervals and automatically remove the temporary internet files, traces of your internet activity, site visits and other un-necessary files. This is a featured packed utility that optimizes your pc performance and protects your online privacy. The thought that web sites can scan your computer and automatically get hold of your surfing tracks is quite disturbing. For a person who likes to keep his privacy, software that could remove the trails of where he's been and what he has clicked could be of great help. And if that software also cleans other debris like unneeded files, dead shortcuts, etc., then it couldn't be better. If these files remain in your computer, it can greatly diminish the speed - you may be sitting on a Pentium III machine while getting an output of a Pentium I. 1Cleanup has been developed keeping all this in mind."