Is Mac Keeper a Keeper

I was thinking of getting mac keeper but i am unsure if it is necessary.

Has anyone used this program?

If so would you give me the pros and cons.

Is it a plus for the system speed?

""" What you do with what you have, is more important than what you could do, with what you don't have."

> > > Knowledge + Action = Wisdom - J. Corbett 1992 """"