7. The method of claim 1 , further comprising: determining, from among a plurality of different types or degrees of associations between the members in the member network, a particular type or degree of an association in the member network between the third member and the first member; and ranking the collection of articles responsive to the third search query based on the particular type or degree of the association in the member network between the first member and the third member; wherein providing the third member with information describing the collection of articles responsive to the third search query comprises formatting the information in an arrangement that corresponds to the ranking of the collection of articles responsive to the third search query.
7. The method of claim 1 , further comprising: determining, from among a plurality of different types or degrees of associations between the members in the member network, a particular type or degree of an association in the member network between the third member and the first member; and ranking the collection of articles responsive to the third search query based on the particular type or degree of the association in the member network between the first member and the third member; wherein providing the third member with information describing the collection of articles responsive to the third search query comprises formatting the information in an arrangement that corresponds to the ranking of the collection of articles responsive to the third search query. 10. The method of claim 7 , further comprising determining a level of the particular type of association in the member network between the third member and the first member, the level indicating a relative strength of the particular type of association between the third member and the first member; and wherein ranking the collection of articles responsive to the third search query is further based on the level of the particular type of association in the member network between the third member and the first member.