Abstract: An advertisement presentation is generated for display to a user. The presentation may include an advertisement that is associated with an advertiser and with content requested by the user. User attention to the advertisement may be determined based on user activity. The advertisement presentation may be modified based on the determined user attention.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, for providing a user interaction point on a user device in conjunction with content that is provided by a content publisher. A method includes receiving a request for an advertisement to be displayed in a slot associated with a third-party content site; identifying a relevant advertisement to be provided in the slot; determining information to be included in an annotation associated with the advertisement, the annotation including customized information related to the user or a group associated with the user; and providing the advertisement responsive to the request including providing the annotation for presentation along with the relevant advertisement.

Abstract: Among other disclosed subject matter, a computer-implemented method for requesting a service includes accessing a universal tag included in media content on a first device. The universal tag is configured for use in requesting content relating to any of a plurality of services for a portion of the media content. The method includes receiving service information for the media content, the service information indicating at least a first service of the plurality of services as being assigned to the portion. The method includes generating a request for the first service identified by the service information, the request generated using the universal tag.