I was searching for an Application that would show me my duplicates and then LET ME DECIDE whether to delete them or not. This did just the trick. I have had several customers where I work asking how to delete multiples (people end up with 20,000 pictures not knowing how they did it...it's devastating to tell them they have to delete them one-by-one!) and from now on I'm going to recommend Duplicate Annihilator!