Mac OS X: The verdict isn’t out on this piece of software meant to keep your mac clean.
Generally it gets bad and good(paid) reviews. But due to the reviews stating that this application is so destructive to ones system, one has to figure that this company is paying people to write good reviews.
At our shop with our own internal research, findings show that when running on a new computer, installing MacKeeper causes it to run sporadic in speed.
According to the worst reviews, apparently this app scans all of your files and removes pictures. At random. Other people complain of other files that go missing as well.
We Mac people are a naive bunch when it comes to viruses and spyware. They are directly playing on this ideal when tricking Mac users into installing this onto your computer.
For real virus protection that is free, turn to: Mac Sophos AntiVirus, we use this at the shop.
Additionally, regarding MacKeeper, if you take a look at the two reviews below, you’ll notice at the bottom is a section that says, “Did you find this review helpful?” The one with praise is found as not useful, and the one with a bad rating is seemingly very useful.
All Reviews gathered from CNET: http://download.cnet.com/MacKeeper/3000-18510_4-75678863.html#rateit