1. A user-interface method of selecting and presenting a collection of content items, the method comprising: providing access to a set of content items; determining an organizational or social relationship of the user to at least one other person and inferring a likelihood of the user wanting to contact the other person based on the organizational or social relationship; determining a relevance of at least one content item of the set of content items to the other person; associating a relevance weight with the at least one content item, wherein the associated relevance weight is based in part on the likelihood of the user wanting to contact the other person; receiving input entered by the user for identifying desired content items; in response to the input entered by the user, selecting and presenting a subset of content items to the user as a hierarchy of content items browsable by the user, wherein the content items are ordered at least in part by the initial associated relevance weights of the content items.
2. The method of claim 1 , wherein the at least one content item of the set of content items includes contact information associated with the other person.