I agree about system images, and have used them for years. I enjoy testing new software on my PC, including registry cleaners, and if something goes wrong, it is much easier to restore a system image than do a clean install. If used right, I have found that a good registry cleaner helps to keep my PC running better, than leaving lots of useless entires that cause conflicts. Just my personal opinion based on my own testing. That being said, I agree that most average computer users would do well to avoid using registry cleaners.