How To track profitable keywords?

Hello everyone!

So yesterday I started with adwords and already got sales.
I have a wordpress blog set up, promoting a clickbank product.
My adwords ads are targeted to my wordpress page. From my wordpress page I build a php redirect to the clickbank product to hide my affiliate link.

My problem is now that I have approximately 50 keywords which bring me traffic from adwords. Of course not every keyword is making me sales.

That's why I would like to start to track the keywords to find out which keywords actually bring sales.

Can anyone help me? Or can anyone recommend a good e-book to learn that?

Get prosper202 and install it on an unused domain.

yeah check out the videos for tracking202, the first 2 or 3 will really help you out

Who need that crappy prosper if CB provide Adwords Conversion tracking now ?