You may nor may not know that Windows saves extra data that takes up Gigabytes of diskspace after a while. You may find that the cons out weigh the pros and if you are tight on Hard Disk Space, you can do this to get the most out of your drive. I did this for my brothers drive that was 2 years old. He had around 10GB free to start and when this process was complete, he had nearly 40 GB Free! See how you can do this by watching this small Tutorial!
Oops At first I forgot to include the Forbes image. Fixed!