cookie overwriting

I've been researching how cookies work in web browsers and in the context of cashback portal sites, for a personal project. I think I have a basic but superficial understanding and wondering if anyone with developer-specific knowledge in this area can help me out? I know that both cashback...

Here is my situation. I'm participating in an internal affiliate program for a company that also has an affiliate program on CeeJay. I get credit for sales when customers use a special code in the shopping cart. However, if there is a CeeJay cookie set, I will lose credit for that sale. The...