Where Do I Mess It Up



Basically gravity means the number of affiliates that recently promoted and got sales for the product.

What I've seen works well with clickbank:
- direct linking
- short personal presell with a bonus (offer a free pdf report or something)

See those long sales letters? They're there to make the sale. What you need to do is just build some trust in the product.
 
I'd say the offers are just bad and/or the traffic isn't the right demographic. Review the traffic you're driving to see if they are a good fit for the product. If not, then you need to tweak the campaign to drive more targeted traffic. See how the offers are performing with other affiliates---if no one is getting sales, it may just be a bad offer.

Good luck!