1. A computer-implemented method comprising: acquiring a set of data from a target referenced by a hyperlink to publish; storing at least a portion of the set of data on a server; analyzing the set of data to automatically generate a set of candidates for a summary and title of a preview for the hyperlink, wherein the preview provide a synopsis of content at the target referenced by the hyperlink; ranking the summary and title preview candidates based on relevance to the target referenced by the hyperlink, the relevance determined via analysis of positive and negative signals for each candidate; selecting a top ranked summary and title from the set of candidates; and transmitting a preview candidate including the selected summary and title.