More and more Clickbank products are now building "leaks" into their sales pages. I found one yesterday which fitted all my criteria except where they offered a teaser of three free videos. Of course, anyone interested in this offer, was first required to sign up with their email address.
I quickly set up an affiliate link to the product and using a throw-away email address, duly signed up for the free offer.
This morning, I checked and, as expected, there was an email from the marketer, pushing his product, with several 'buy now' links.
When I clicked, they went straight to a payment page with his affiliate link at the bottom.
This underhandedness is also creeping into products I've been promoting for a while. I now check each one weekly, and on a couple of occasions I've stopped promoting products because of newly implemented leaks which out and out steal my commissions.
Just one marketer apologized and provided me with my own leak-free page. Others have either told me to live with because a certain percentage of visitors will still buy directly, or not even bothered to reply when I've emailed them.