1. A method of presenting search results in a response to an end-user query, said search results being combined from results from a first index and results from a second index, said first index comprising a plurality of index entries modifiable by an administrator, said second index comprising a plurality of index entries that are not modifiable by said administrator, said index entries of said first index and said second index each having an associated key field, said method comprising: (i) querying index entries of said first index using said query to extract a set of first search results, each including a value of said associated key field, each of said first search result associated with a quality of match; (ii) querying index entries of said second index using said query to extract a set of second search results, each including a value of said associated key field, each of said second search result associated with a quality of match; (iii) combining said first and second set of search results to generate a list of matching search results, in which any search result from said second index for which an associated key field is identical to the associated key field of a matching search result in said first set of search results is discarded, in favor of said matching search result in said first set of search results.