Oh, so MacKeeper isn't good? I was thinking about that to clean up my Mac.
I'm not sure, from reading to the end of the thread, whether you've gone past Artie's link.
You absolutely do not want MacKeeper on your drive and certainly do not want to use it for any kind of maintenance.
It is a problem.
On the net you will read plenty of "personal" reviews exhorting MacKeeper but it is generally understood that the people who write them are paid to do so.