I can't tell you why your ranking and traffic tanked, but there are a few things you need to work on: Read up on FTC and review sites requirements. There is supposed to be a large and obvious disclosure of your affiliate relationship with the advertiser any time you review a product. You might want to do some proofreading too. There are incomplete sentences in your reviews (such as "product used to $20"). Clickbank should have all the details regarding Disclosures since so many of their products are sold via reviews and testimonials. This is not an in depth site review, just a few obvious things I spotted in a quick visit. Search engines notice these things too, so it couldn't hurt to have a more complete site to compete with.