Q: Is MacKeeper safe to use?

No, it isn't.

(69041)

Don't do it....

GB

you should run away from it....

if you know what's good for your macbook that is...

No.  Many call it malware.  Too many occurences of slowdowns and erratic system behavior.

The "official" uninstall actually is sabotaged to leave parts of it installed and prompt you to re-install fully.

There has been a long - and thoroughly unbiased - discussion of MacKeeper in the Mountain Lion forum. The consensus amongst users who have tried it (and I include myself) has been that it is malware of the "annoying" type. There are a number of free or inexpensive apps that will do for you what MacKeeper will do without all of the annoying pop-ups and the price.

Because it's classified as malware because of it's "annoying" pop-up, I would stay far, far away from it. However if you do decide to install it, the consensus is that the 'newer' versions will uninstall everything - something the older versions would not do.

Still, it's best to stay away from it - if there are features that you see that you would like to use, just post back and we can recommend alternatives - from free to almost free.

Clinton

I have an old mac that is very very slow and out of warrenty, is there something like the pc ccleaner, I inadvertantly download Mackeeper software although i did not purchase it, how do i delete it

With newer versions of MacKeeper, you should be able to just drag the MacKeeper application to the Trash and it will, supposedly, uninstall everything (although you'll get some sort of warning).

There are a handful of 'cleaner' apps out there - but you don't need a thing. They usually end up doing more harm than good (particularly MacKeeper) and can bog down your system even worse than it is now.

Two articles that you should read - both from Thomas Reed:

The myth of the dirty Mac

...and...

Mac Performance Guide

...read both before doing anything rash.

Good luck,

Clinton