1. A method, comprising: identifying, by a processor, two users that have made respective search queries for common subject matter via respective client devices; launching an on-line dialogue window for the two users to communicate with one another via respective client devices; receiving, from an additional user that has made a search query for the common subject matter, a request to preview the on-line dialogue; retrieving, in response to receiving the request, a backlog of a recent discussion in the on-line dialogue window, wherein the backlog of the recent discussion occurred prior to the request from the additional user being received; and providing a preview window to the additional user that displays the backlog of the recent discussion and one or more suggested links relating to the recent discussion.