What script would you recommend for membership and product selling site? It has to support also affiliates getting paid for referrals made by their referrals. Thanks
Launch Formula is a good program launchformulamarketing.com I use this script on a few products and I also use Viral Profit machine viralprofitmachine.com This are not my affiliate links. I prefer these programs to Clickbank.
If you are running your own affiliate program then you may want to take a look at http://www.affiliateseeking.com/affiliate-software/1.html It lists some of the most used and popular affiliate software online. It's also an affiliate programs directory which gets many submissions from affiliate programs that use the softwares listed.
You may try xooPartner for free. xooPartner can handle unlimited affiliates getting paid for referrals made by their referrals. (multi-tier system)