I am an IT Professional and I know Regedit quite well and have used it for many years to keep my Registry Clean. Therefore, I have the ability to compare what I would have painstakingly done in Regedit to what this app does - and RegClean is not damaging to your PC at all and does a very good job of cleaning your Registry. If this app damaged your PC in any way, it's more than likely because it wasn't used correctly. I now use RegCleaner and it is quicker and easier than digging into Regedit. I do wonder why people write reviews, however, not about the product itself but about their opinion of the product type. I would suggest that if you have actually used the product, then please do share your review. But if you just don't personally like Registry Cleaners, this is NOT the place to tout your opinion.