6. The method of claim 1 , wherein steps (e) and (f) comprise dividing the reviews into a given number of chunks, calculating the similarity of each review against every other review in each chunk, and for each pair of reviews whose similarity exceeds a given threshold, clustering said reviews.
6. The method of claim 1 , wherein steps (e) and (f) comprise dividing the reviews into a given number of chunks, calculating the similarity of each review against every other review in each chunk, and for each pair of reviews whose similarity exceeds a given threshold, clustering said reviews. 18. The method of claim 6 , further comprising performing a post merge process to collapse clusters across chunks.