Perhaps you should analyze your keywords and see which keywords are converting. Which is actually hard to do from your end because you are an affiliate.
If you have not already done so work a reporting suite, WebTrends; Sane Solutions Nettracker; or LiveStats, to name a few. See where people are entering your site and where they are leaving.
Good luck with your December revenues and traffic
Warmest Regards,
Gregory Van Horn
President & Senior Developer
Transcend Media Interactive Marketing & Development Group
Ecommerce | Website Development | Affiliate & ROI Tracking Solutions | Online Marketing