PayDotCom.com is very similar to ClickBank in that it is an alternative 'MarketPlace' approach to an Affiliate Network. PayDotCom offers a number of enhancements and unique approaches to affiliate marketing. In particular, vendors can offer an unlimited number of products for sale for a lifetime membership of only $29.00. Vendors only pay a commission once a product is sold.
PayDotCom also offers:
* one-tier or two-tier affiliate programs
* monthly billing
* ability to sell digital or physical products
* pays instant commissions