Clickbank Payment links,www.2.xxxx.pay.clickbank.net,www.3.xxxx.pay. clickbank.net -How do you do it? How are these typical clickbank payment links done? www.1.Username.pay.clickbank.net www.2.Username.pay.clickbank.net www.3.Username.pay.clickbank.net when they are selling the same item but different amounts? and why are they typically done by marketers? what is the reason? can they be used on different products completely? or are meant for the same product?