Seems easy enough to use, however its effectiveness is still in great question. Tried it once, and it didn't seem to delete any duplicates. The dev site provides instructions on how to fix this if it's an iCloud issue (which may be for me). Shut down BMS & Safari, followed the instructions, turned it back on and somehow the software suddenly believes I ran it 5 times (which I did not), thus expiring the trial license. So, still unconfirmed whether it works as I'm now forced to delete it. Unless you buy without fully trying it, or you are lucky enough not to have an iCloud issue, it's impossible to actually "try before you buy." So I'm deleting and moving on.