User control of replacement television advertisements inserted by a smart television

A method of computer-detecting a user-control action comprising,

• with software that at least in part has been downloaded over the Internet, which software programs a computer associated with a television display,
• during presentation via the television display of a replacement television presentation, wherein the replacement television presentation is being presented in place of a television presentation embedded within a television signal feed,
• (a) automatically comparing information based on electronic indicia of the television signal feed as received from a television signal source device with information based on Internet-received electronic indicia of the embedded television presentation, to identify a difference between at least a portion of the Internet-received embedded television presentation and at least a portion of the television presentation embedded within the television signal feed received from the television signal source device, without receiving indicia of the user-control action directed to the television signal source device, and
• (b) automatically using the identified difference to make a corresponding change in the presentation via the television display of the replacement television presentation in accordance with the user-control action.