A method, comprising: receiving a television signal from a video casting system through a first tuner of a client terminal and presenting the received television signal on a first portion of a display screen coupled to the client terminal; receiving through a second tuner of the client terminal advertisement data of an advertisement extracting identification information that has been placed in the vertical blanking interval of the television signal; receiving a command at the client terminal from a remote control including a ticker button when the ticker button is pressed by a viewer, and wherein the command instructs a ticker to be displayed on the display screen; in response to receiving the command from the remote control, presenting the ticker having a scroll region for displaying and automatically scrolling the advertisement on a second portion of the display screen, the second portion of the display screen being a minority portion relative to the first portion of the display screen; the client terminal processing the identification information to identify and select the advertisement, and wherein the selected advertisement is in context with subject matter of the television signal presented on the display screen; presenting the selected advertisement within the scroll region of the ticker, wherein the selected advertisement comprises one or more items that automatically scroll in the scroll region, and wherein an item of the one or more items is selectable by viewer response using the remote control when the item has scrolled into a center focus box displayed on the scroll region; processing the viewer response and sending viewer response information to a merchant to conduct a transaction; receiving additional transaction information from the merchant; and presenting said additional transaction information within the scroll region of the ticker to allow said viewer to conduct the transaction by further viewer response using the remote control when an item of said additional transaction information has scrolled into the center focus box. receiving a television signal from a video casting system through a first tuner of a client terminal and presenting the received television signal on a first portion of a display screen coupled to the client terminal; receiving through a second tuner of the client terminal advertisement data of an advertisement extracting identification information that has been placed in the vertical blanking interval of the television signal; receiving a command at the client terminal from a remote control including a ticker button when the ticker button is pressed by a viewer, and wherein the command instructs a ticker to be displayed on the display screen; in response to receiving the command from the remote control, presenting the ticker having a scroll region for displaying and automatically scrolling the advertisement on a second portion of the display screen, the second portion of the display screen being a minority portion relative to the first portion of the display screen; the client terminal processing the identification information to identify and select the advertisement, and wherein the selected advertisement is in context with subject matter of the television signal presented on the display screen; presenting the selected advertisement within the scroll region of the ticker, wherein the selected advertisement comprises one or more items that automatically scroll in the scroll region, and wherein an item of the one or more items is selectable by viewer response using the remote control when the item has scrolled into a center focus box displayed on the scroll region; processing the viewer response and sending viewer response information to a merchant to conduct a transaction; receiving additional transaction information from the merchant; and presenting said additional transaction information within the scroll region of the ticker to allow said viewer to conduct the transaction by further viewer response using the remote control when an item of said additional transaction information has scrolled into the center focus box.