Great service for promoting your product online, especially for New comers as they don't have sufficient traffic on their website. Initially I am getting clicks through AdWords at every low rate, which increases with time. But you can't expect too many clicks even after paying high cpc rate.
The new AdWords website doesn't fit perfectly on display and also slow in performance. AdWords keyword tool give great keyword ideas. The worst thing is they suspended my account without any reason, which is included in their policy.