From what I understand everyone is right,there will be no decrease in potency,but....One thing to keep in mind is the age of the clones/mother.When you cut a clone it takes on the age of the mother,ex.if your mother is 8 months old,the cutting is then 8 months old as well.Seeing how weed is an annual plant there probably is some sort of limitation as to how long one could keep taking cuttings and not run into some sort of problems.Take care,be well,and most of all be safe.