Abstract: One or more keywords associated with a first content item are identified. Restricted terms are identified. One or more of the one or more keywords are selected as a link, wherein the link does not contain the restricted terms.

Abstract: Customization settings are received from a content publisher. The customization settings control a manner in which information is displayed to users. A request for an advertisement presentation to be displayed with content associated with the content publisher is received. The requested advertisement presentation is rendered in a content-related site hosted by the content publisher. In response to receiving a user selection of the advertisement presentation, a customized advertisement presentation is rendered in an advertisement-related site hosted by the content publisher based on the user selection and the customization settings.

Abstract: A technique, method, apparatus, and system to provide related ad link units with vertical clustered or anti-clustered categories to be displayed with web page content for view by a user. In one implementation, a method is provided. The method includes selecting a first ad link category for a first position of an ad link unit. One or more second ad link categories are identified using one or more similarity measures, where at least one second ad link category has one or more similarity measures associated with the first ad link category.