In
e-mail terminology, co-registration refers to arrangements between companies
to collect user information. Usually this would be a separate check-box on a Web
signup form where the user can
opt-in to receive messages from a third-party. For
example, a magazine running a contest may include a checkbox for registrants to
accept e-mail future announcements from them, and also from the prize sponsor of
the contest. Co-registration usually adds the subscriber, provided they check
the boxes to give permission, to two or more
opt-in mailing lists.
See "How
Affiliate Marketing Works" in the "Did
You Know..." section of Webopedia.
Also see Refer-It.com, a directory of
referral & affiliate programs for e-commerce, featuring information on over 6,500
affiliate programs.