Comment 1 for bug 501164

Thank you for taking the time to make Ubuntu better. Since what you submitted is not really a bug, or a problem, but rather an idea to improve Ubuntu, you are invited to post your idea in Ubuntu Brainstorm at http://brainstorm.ubuntu.com/ where it can be discussed, voted by the community and reviewed by developers. Thanks for taking the time to share your opinion!

Also, as Firefox and chrome/chromium all have the option to clean their own temporary files, this ability in computer-janitor would be a duplication of functionality.