I own a particular product in the internet marketing niche that has been averaging me 20 sales per day for the past 18 months (with no affiliates and paypal as the processor). I recently decided to update the product with added information and such. I decided to do a little experiment while the product was being updated. After reaching a few ClickBank products, I found one worthy of my promotional efforts so I redirected all of my current traffic to that product while mine was being updated (for about 2 days) and guess what, I wasn't credited with a single sale within these two days. When I look at the clickbank analytics I've had a ton of both order form impressions and submits but zero sales.
Like I said, with this same traffic my product sells at an average rate of 20 sales per day, there is something really corrupt going on with clickbank. After seeing these results I had to double check my setup but everything is setup correctly.
I'm someone that really feels that most people use the word scam too freely but in my opinion clickbank is a scam in one way or another. I knew this before I decided to do this test but I just don't understand why so many people are suggesting clickbank when so many people are seeing these types of problems.