I've just hired ReachLocal.com to manage my Google AdWords campaign. They manage my list of keywords and adjust my bids. All the ads go to a mirror of my own website that replaces my phone number with a tracking number so they can see which AdWords are producing leads (through the tracking phone number or my online forms) and which are just throwing money away.

I'm both encouraged and confused: on one hand I can see that a computer could track the effectiveness of each keyword and whether or not they produce leads and calibrate itself based on this feedback so much better that a human could, but I'm uncomfortable letting this blackbox run unchecked. I get neat reports, but no control. Any active rainers have any experience with ReachLocal or other companies that manage your AdWords for you?

Thanks!