I have a blog about Books & I contacted a website which sells books asking if they were interested to partner with me for increasing their sales through my visitors. They are also interested in this business model & suggested that "They will pay me a certain commission on each sale referred through my site". But their website DOES NOT have any Affiliate scripts running ! ! Now,in this case what shall I do ? They are one of the biggest bookstores online & I dont want to let them go away. 1) Is it necessary that they should install an affiliate script on their server for tracking sales from my site ? OR 2) Is there any 3rd party websites where we both can track clicks/sales made through my site ?