Yes, I know that if for instance I tell it to delete my Xcode derived data it was delete data from ~/Library/Developer/Xcode
I know if I tell it to delete log files it will delete from /Library/Logs /var/logs or ~/Library/Logs depending on what I select
Yes, I could do this stuff by hand, or I could write a bash script to do it, but then I could also download the source code for applications by hand and run ./configure, make, make install by hand, but instead I use homebrew because it is convenient; I could backup my files by hand, but I use Time Machine and Crashplan because they are convenient.
It is not an app I would have normally bought, but it was included in the Macheist bundle (I think that was the one) and it was convenient
I asked in what way you had had problems with it, and stated that I had not, because you seemed so animated about it and I had not had any problems. So I was concerned that there was potentially something I had missed. I did (additional) searches before I posted, and just like last time all I came across was positive reviews on the likes of Macworld, iMore and CultofMac; and even a link on Macrumors
http://guides.macrumors.com/Cleaning_Your_Mac's_Hard_Drive Hence why I asked what problems you'd had
(Mackeeper on the other hand is a completely different kettle of fish, which you can tell simply by the scare tactic language they use to try and get people to use it and the means they use to "advertise" it.)
But instead of answering you decided to just attack me, be obnoxious and accused me of misinforming people.
Now I remember why I don't visit these forums very often