You will ensure that the information in your Associates Program application and information otherwise associated with your account on the Associates Site, including your email address, other contact information, and identification of your Site, is at all times complete, accurate, and up-to-date. We may send notifications (if any), approvals (if any), and other communications relating to the Associates Program and the Agreement to the email address then-currently associated with your Program account. You will be deemed to have received all notifications, approvals, and other communications sent to that email address, even if the email address associated with your account is no longer current.
Affiliate networks offer you access to multiple (and by multiple, we mean hundreds if not thousands) of individual affiliate programs. They basically work by simplifying the signup process - instead of applying to become an affiliate for a each product you want to promote, you simply apply to join the network and instantly have access to hundreds of different affiliate offers.