Say I have an Earnings Per Click of $.80 and my PPC advertising is $.30 I am making $.50 a click which I think is good (please let me know if it isn't). What number should I stop at, .10 a click, .05? Or as long as I am making a profit, keep doing what I am doing?
It really comes down to when you feel you are making too little for the amount of time you are spending promoting the program.