Abstract: A system and method for selecting content to be presented to a user of a web site by identifying a topic of a content item on a web site using a ranking of a significance of terms relating to the topic in the content item, identifying a topic of interest on the web site of the user from an input of the user into the web site, and selecting the content item with the highest significance ranking for the topic of interest of the user.

Abstract: A system and method of identifying stored responses that may be relevant to a subject query, by identifying relevant phrases in the query that express a topic of the query. A list of the relevant phrases is indexed, and a set of stored responses is reviewed to find a response that includes one or more of the relevant phrases. Relevant phrases may be ranked so that matches of particular phrases in a subject query and stored response may be given more weight in determining a relevance of a stored response. Stored responses may be ranked by the relevance of the terms that they include, where such terms are also relevant to the subject query.