Affiliate program organization

I am a current new member to this site and also to affiliate marketing. I have a quick question about organization of promoting products. I predict I will promo quite a few products in the future. Is my best method and more common for affiliate marketers to purchase a new domain name for each product. Or do some of you create one domain name and promo a few products on it to save time and organization?
thank you so much for any type of feed back.

See original post by bladysh