We've had a little success. It's fairly easy to track the conversion rate from AdWords campaigns if you're also using Google Analytics. Our ads convert to sign

We've had a little success. It's fairly easy to track the conversion rate from AdWords campaigns if you're also using Google Analytics. Our ads convert to signups at about a 10% rate. At $0.16 CPC, that means we pay $1.60 for each signup via Adwords. That's still too low for us to get a reasonable return. I've tried various things in order to bring up the conversion rate, since I think 10% is low, but this is an area where I'm lost. I've tried making a landing page, A/B testing the landing page, and some other tricks, but I'm out of my area of expertise here. That's what I meant when I said that doing ads is pretty damn hard. But if I could just hit 20% conversion and stay there...then we'd be golden!