Before you decide to recycle your old computer (either through Dell’s new recycling program or other services found here), you need to erase all of your personal files, especially sensitive financial documents. After poking around on CNET and other tech-review sites, I was delighted to learn that some of the best disk-cleaning software for Windows is actually free. It’s called Eraser, and you can download it here. It’s relatively fast and easy to use, letting you drag and drop the files you want to eradicate.

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