Domain parking
Domain parking is an advertising practice used primarily by
domain name registrars and internet advertising publishers to monetize type in trafic visiting an inactive domain name. The undeveloped domain name will usually point (redirect) to a page full of advertising links. These links will be targeted to the predicted interests of the visitor. The keywords of the domain name provide clues as to what the visitor sought before arriving. For example, the domain fast-weight-loss.com might point to a page of links to fad diets and drugs.
this is how it works