Method and system to facilitate transactions in a particular on-line trading platform from a third party web site may be utilized beneficially to enhance a user's experience in purchasing items referenced on third party web pages. When a user encounters, on a third party web site, a presentation of an item that is linked to a listing maintained by the on-line trading platform, the user may simply click on the presentation of the item, which causes presentation of a visual control selectable to launch a transaction processing flow facilitated by the on-line trading platform, without requiring the user to leave the third party web site.