Anytime that you are spending money on something for your business, you want to make sure that you get what you want.  Make sure you talk to someone with the ppc management service, and that you ask the questions that you want answered.  If you do not feel like you and that management service are a good match then don’t just go with them.  You wouldn’t buy a car that you aren’t comfortable driving, so don’t choose a service that you aren’t comfortable using.  You should also make sure that they are willing to give you the results that you are looking for, and that you understand their fees, and what they expect from you.