"CCleanup" appears to be a wordplay on "cleaning up CCleaner", but it's confusing and unnecessary. Even though the original article is named that way, I propose changing the thread title to the proper, well-known application name, CCleaner.
Two seconds to type four words into the search bar.
That software basically go through your computer and delete a ton of things that it considers useless. Have you ever seen the defaults settings? For instance, it used to delete the history, cache and settings from all major browsers.