affiliate link
In affiliate programs, it's a special URL that contains the ID or username of the affiliate. This URL is used by the advertiser to track all traffic the affiliate sends to the advertiser's site as a part of the affiliate program.
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.


