Email advertising

Legitimate Email advertising or E-mail marketing is often known as "opt-in e-mail advertising" to distinguish it from spam.

Affiliate marketing

Affiliate marketing is a form of advertising where the advertiser allows a potentially large number of small publishers to pick specific creative elements or offers to market in exchange for payment should such marketing create sales or other revenue. This is usually accomplished through a self-service online system, such as those offered by third parties like Performics, Commission Junction/BeFree, Primeq or Linkshare.

Affiliate marketing was an invention by CDNow.com in 1994 and was excelled by Amazon.com when it launched its Affiliate Program, called Associate Program in 1996.

The online retailer used its program to generate enormous volumes of low cost brand exposure and provided at the same time small Websites a way to earn some supplemental income with their Sites.

Refer to Affiliate marketing find out more about this advertising model and compensation structure.