Ladies and Gentlemen, I have been looking for a way to clean my contact list for years. I think I found a keeper. I was a victim of multiple email accounts and mobile phones that kept aggregating information and syncing contact information together, in an unorganized fashion. Using Contacts Cleaner I was able to clean my 4000+ contact list with relative ease. Be warned, it does have a very quick learning curve, so before you start changing everything read your options carefully. I also highly recommend that you save a backup of your contact list before you start, so you can always fall back on that version if things go wonky. I had to do that once before I fully understood the power of the app. My advice would be to go through and fix the easy ones where you can change multiple accounts with common rules. The app seperates all of the different errors by category, which is quite nice. Don’t be afraid to commit 2-3 hours to clean your account for the first time. Once it’s clean a simple scan once a month could keep you on track. I love how clean my contacts are now! Finally!!