3. The method of claim 2 , wherein performing the one or more analysis procedures includes performing an insignificance analysis of each URL parameter associated with the cluster.
3. The method of claim 2 , wherein performing the one or more analysis procedures includes performing an insignificance analysis of each URL parameter associated with the cluster. 4. The method of claim 3 , wherein performing the insignificance analysis of a particular URL parameter includes: grouping document identifiers in the cluster into multiple sets, each set corresponding to a unique document content with respect to other sets; and computing an insignificance index for the particular URL parameter in accordance with the number of document identifiers in each set in which the particular URL parameter has at least two different parameter values.