Yes. And for $500 I'll teach you how to make a fortune off pay per click ads!
Seriously, I have gotten excellent return from it since I started in April. It won't make your phone ring off the hook but beats the heck out of any other advertising I've tried,,and you can cut it off anytime so your not tied to a monthly payment.
Also sign up for Yahoo. The clicks are a little less in my area for the keywords I bid on.
And I would recommend cutting off the content match part so you only get clicks from people who are actually looking for your services.