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Full user review
"useless freeware is one thing, but..."
It doesn't seem to harm anything but your pocket book. Is that a Pro?
If you a recent version of OSX (certainly if you use Lion), this program is redundant with the defragging built into the OS itself. (See MacMost videos)
It's bad enough to make freeware with no real function, but to charge for software that specifically plays on users' ignorance and makes them think something useful is happening when it is not...
Snake oil, anyone?