There's never a bad time to do a little tidying up. Like your home or car, your computer can become cluttered without occasional cleaning.
Fortunately, cleaning up your computer takes much less work than cleaning your home. In fact, there are programs that make it nearly automatic.
My favorite part is that these programs are completely free!
PC Decrapifier - Manufacturers often install trial programs and other "extras" on new computers. For the most part, this bloatware just slows down the system until it's removed.
If you have a new computer, or you never removed the bloatware from your older computer, you can get a quick speed boost by running this program. It automatically detects programs you probably don't want and uninstalls them quickly.
CCleaner - Anything you do on your computer leaves a trace somewhere. These can be small registry entries, a full browser history or multi-gigabyte temporary files.
Not only do these take up space, they can reveal sensitive information to snoopers. This program cleans out these traces with the click of a button. Plus, it includes a powerful program uninstaller and registry cleaner.