Are Clickbank Products trash?

anyway, this weekend I have been using Bing text ads to promote clickbank products. But with little success, I've used the tips posted in BHW for selecting good products, and have gotten 61 hops between 4 products, but no sales. I'm trying to figure out where the issue is, as the products I've selected to promote are successful, but the people i seem to attract have no interest in buying anything. am i overreacting? i already spent 41$ on ads. Is it too early to call it a failure?