Twitter, Inc. (delisted)
Ad placement in mobile applications and websites

Abstract:

A method of placing advertisements involves sending, from a device, a request for at least one ad position, receiving, in response to the request, ad positioning information specifying an ad position in a stream and a related content position in the stream, determining, by the device, that a related content item is present in the stream, and overriding, by the device, the ad positioning information by placing an advertisement associated with the related content in the related content position within the stream.